Dr. Consolacion  Y. Ragasa
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Dr. Consolacion Y. Ragasa

Professor
De La Salle University, Philippines


Highest Degree
Ph.D. in Chemistry from University of the Philippines, Philippines

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Area of Interest:

Biomedical Sciences
100%
Natural Compounds
62%
Phytochemistry
90%
Pharmaceutical Chemistry
75%
Natural Medicine
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
0
Abstracts
0

Selected Publications

  1. Ragasa, C.Y., V. Ebajo Jr., M.M.D.L. Reyes and C.C. Shen, 2015. Chemical constituents of Eucalyptus deglupta. Der Pharma Chemica, 7: 224-229.
  2. Ragasa, C.Y., V. Ebajo Jr., M.M.D.L. Reyes and C.C. Shen, 2015. A flavone from Eucalyptus deglupta. Res. J. Pharm. Chem. Biol. Sci., Vol. 6. .
  3. Ragasa, C.Y., T. Bauca, S. Chua, K.B. Cornelio and C.C. Shen, 2015. Chemical constituents of Synsephalum dulcificum. Chem. Nat. Compounds, Vol. 51. .
  4. Ragasa, C.Y., O.B. Torres, L.B. Bernardo, E.H. Mandia, M.J. Don and C.C. Shen, 2015. Chemical constituents of Palaquium luzoniense. Chem. Nat. Compounds, 51: 181-182.
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  5. Ragasa, C.Y., O.B. Torres, J.M.P. Gutierrez, H.P.B.C. Kristiansen and C.C. Shen, 2015. Triterpenes and acylglycerols from Canarium ovatum. J. Applied Pharm. Sci., Vol. 5. .
  6. Ragasa, C.Y., M.C.S. Tan, M.G. Noel and C.C. Shen, 2015. Isothiocyanates and sterols from Raphanus sativus. Der Pharmacia Lettre, Vol. 7. .
  7. Ragasa, C.Y., K.F. Lim, L.O. Bernardo, M.V. Arceta, E.H. Mandia and C.C. Shen, 2015. Chemical constituents of Weinmannia luzoniensis. Chem. Nat. Compounds, 51: 183-184.
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  8. Ragasa, C.Y., J.P.M. Austria, A.F. Subosa, O.B. Torres and C.C. Shen, 2015. Chemical constituents of Amaranthus viridis. Chem. Nat. Compounds, 51: 146-147.
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  9. Ragasa, C.Y., J. Caro and C.C. Shen, 2015. Chemical constituents of Artocarpus ovatus blanco. Der Pharma Chemica, 7: 178-182.
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  10. Ragasa, C.Y., A.P.U. Chua, E.H. Mandia, L.O. Bernardo and C.C. Shen, 2015. Chemical constituents of Cardamine flexuosa. Der Pharma Chemica, 7: 100-105.
  11. Ragasa, C Y., E.C. Cabrera, O.B. Torres, A.I. Buluran, D.L. Espineli, D.D. Raga and C.C. Shen, 2015. Chemical constituents and bioactivities of Glinus oppositifolius. Pharmacogn. Res., 7: 138-147.
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  12. Ebajo, Jr. V., C.C. Shen and C.Y. Ragasa, 2015. Terpenoids and sterols from Hoya multiflora blume. J. Applied Pharm. Sci., Vol. 5. .
  13. Biona, K., C.C. Shen and C.Y. Ragasa, 2015. Chemical constituents of Talinum triangulare. Res. J. Pharm. Biol. Chem. Sci., 6: 167-171.
  14. Tsai, P.W., K.A. de Castro-Cruz, C.C. Shen and C.Y. Ragasa, 2014. Chemical constituents of Ficus triangularis. Der Pharmanica Lettre, 6: 130-133.
  15. Ragasa, C.Y., V.A.S. Ng, V. Ebajo Jr., M.M.D.L. Reyes, E.H. Mandia and C.C. Shen, 2014. Chemical constituents of Wrightia pubescens (R.Br.). Der Pharmanica Lettre, 6: 14-19.
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  16. Ragasa, C.Y., V.A.S. Ng, V. Ebajo Jr., D. Fortin, M.M.D.L. Reyes and C.C. Shen, 2014. Triterpenes from Shorea negrosensis. Der Pharmcia Lettre, 6: 453-458.
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  17. Ragasa, C.Y., V.A.S. Ng, M.M.D.L. Reyes, E.H. Mandia, G.G. Oyong and C.C. Shen, 2014. Chemical constituents and cytotoxicity of the leaves of Dysoxylum gaudichaudianum (A. Juss.) Miq. Der Pharma Chemica, 6: 182-187.
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  18. Ragasa, C.Y., V.A.S. Ng, M.M.D.L. Reyes, E.H. Mandia and C.C. Shen, 2014. Triterpenes and a coumarin derivative from Kibatalia gitingensis (Elm.) woodson. Der Pharma Chemica, 6: 360-364.
  19. Ragasa, C.Y., V.A.S. Ng, M.M.D.L. Reyes, E.H. Mandia and C.C. Shen, 2014. Chemical constituents of Pipturus arborescens (Link) C.B. Rob. Der Pharmanica Lettre, 6: 35-42.
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  20. Ragasa, C.Y., V. Ebajo Jr., V.A.S. Ng, M.M.D.L. Reyes and C.C. Shen, 2014. Chemical constituents of Strongylodon macrobotrys. Der Pharma Chemica, 6: 366-373.
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  21. Ragasa, C.Y., R.F. Galian, M. Arenal, V. Tan and C.C. Shen, 2014. Chemical constituents of Samanea saman. Res. J. Pharm. Biol. Chem. Sci., 5: 1501-1507.
  22. Ragasa, C.Y., R.F. Galian, E. Lagueux and C.C. Shen, 2014. Chemical constituents of the fruit of Persea Americana. Res. J. Pharm. Biol. Chem. Sci., 5: 984-987.
  23. Ragasa, C.Y., R.F. Galian and C.C. Shen, 2014. Chemical constituents of Annona muricata. Der Pharma Chemica, 6: 382-387.
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  24. Ragasa, C.Y., O.B. Torres, J.V.V. Tongco, R.A. Razal and C.C. Shen, 2014. Chemical constituents of Petersianthus quadrialatus Merr. Res. J. Pharm. Biol. Chem. Sci., 5: 181-186.
  25. Ragasa, C.Y., O.B. Torres, E.H. Mandia and C.C. Shen, 2014. Chemical constituents of Terminalia microcarpa. Der Pharmnica Lettre, 6: 439-442.
  26. Ragasa, C.Y., O.B. Torres, C.C. Shen, M.K.E.G. Lachica and A.B. Sulit et al., 2014. Triterpenes from the leaves of Syzygium polycephalum, S. cumini and S. samarangense. Chem. Nat. Compounds, 50: 942-944.
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  27. Ragasa, C.Y., O.B. Torres, C.C. Shen, L.B. Bernardo, E.H. Mandia, K. de Castro-Cruz and P.W. Tsai, 2014. Chemical constituents of Ficus linearifolia and Ficus triangularis. Chem. Nat. Compounds, 50: 172-174.
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  28. Ragasa, C.Y., O. Torres, E. Marasigan and C.C. Shen, 2014. Sterols and triglyceride from Garcinia binucao. Der Pharma Chemica, 6: 229-232.
  29. Ragasa, C.Y., O. Cuevas, E. Mandia and C.C. Shen, 2014. Chemical constituents of Ficus ampelas. Res. J. Pharm. Biol. Chem. Sci., 5: 355-359.
  30. Ragasa, C.Y., M. Aguilar, L. Theresa, V.A.S. Ng and M.L.G. Bugayong et al., 2014. Terpenoids and sterol from Aphanamixis polystachya. J. Chem. Pharm. Res., 6: 65-68.
    Direct Link  |  
  31. Ragasa, C.Y., K. Biona and C.C. Shen, 2014. Chemical constituents of Sechium edule (Jacq.) Swartz. Der Pharma Chem., 6: 251-255.
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  32. Ragasa, C.Y., J.L. Caro, L.G. Lirio and C.C. Shen, 2014. Chemical constituents of Coix lacryma-jobi. Res. J. Pharm. Biol. Chem. Sci., 5: 344-348.
  33. Ragasa, C.Y., J.L. Caro and C.C. Shen, 2014. Triterpenes and sterol from Artocarpus ovatus. J. Applied Pharm. Sci., 4: 7-11.
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  34. Ragasa, C.Y., F.C. Franco Jr., D.D. Raga and C.C. Shen, 2014. Chemical constituents of Syzygium samarangense. Der Pharma Chemica, 6: 256-260.
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  35. Ragasa, C.Y., D.R. Fortin and C.C. Shen, 2014. Chemical constituents of Shorea contorta. J. Chem. Pharm. Res., 6: 1243-1246.
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  36. Ragasa, C.Y., D.L. Espineli, D.D. Raga and C.C. Shen, 2014. Chemical constituents of Sphaeranthus africanus. J. Chem. Pharm. Res., 6: 2197-2200.
    Direct Link  |  
  37. Ragasa, C.Y., D.L. Espineli and C.C. Shen, 2014. Cytotoxic triterpene from Barringtonia asiatica. Pharm. Chem. J., 48: 529-533.
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  38. Ragasa, C.Y., D. Fortin and C.C. Shen, 2014. Chemical constituents of Arenga tremula. Res. J. Pharm. Biol. Chem. Sci., 5: 1479-1485.
  39. Ragasa, C.Y., A.P.U. Chua and C.C. Shen, 2014. Chemical constituents of Schizostachyum lumampao. J. Chem. Pharm. Res., 6: 738-742.
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  40. Ragasa, C.Y., A.I. Buluran, E.H. Mandia and C.C. Shen, 2014. Chemical constituents of Cayratia trifolia. Der Pharma Chemica, 6: 418-422.
  41. Ragasa, C.Y., A.B. Alimboyoguen and C.C. Shen, 2014. Chemical constituents of Ficus nota. Der Pharma Chemica, 6: 98-101.
  42. Ragasa, C.Y. and J. de Jesus, 2014. Porphyrins and polyprenols from Macaranga tanarius. Res. J. Pharm. Biol. Chem. Sci., 5: 701-708.
  43. Ragasa , C.Y., O.B. Torres, D.D. Raga, E.H. Mandia, M.J. Don and C.C. Shen, 2014. New triterpenes from the bark of Canarium asperum. Der Pharmanica Lettre, 6: 290-294.
  44. Raga, D.D., M.L.S. Diezmos, A.C.C. Orantia, M.J.A. Lo and J.C.P. Evangelista et al., 2014. Analgesic triterpenes from Ardisia cf. Elliptica (Subgenus: Tinus) (Myrsinaceae). Der Pharma Chemica, 6: 153-161.
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  45. Raga, D.D., A.A. Herrera, A.B. Alimboyoguen, C.C. Shen and C.Y. Ragasa, 2014. Effects of triterpenes from Ardisia cf. elliptica (subgenus Tinus) and sterols from Ardisia pyramidalis Cav Pers on Artemia salina and Danio rerio toxicity and caudal fin regeneration. J. Chem. Pharm. Res., 6: 1014-1022.
  46. Espineli, D.L., E.M.G. Agoo, R.S. del Fierro, C.C. Shen and C.Y. Ragasa, 2014. Cytotoxic and antimicrobial compounds from Cinnamomum cebuense Kosterm.(Lauraceae). Pharm. Chem. J., 48: 598-602.
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  47. Espineli, D.L., E.M.G. Agoo, C.C. Shen and C.Y. Ragasa, 2014. Chemical constituents of Cinnamomum trichophyllum. Chem. Nat. Compounds, 50: 389-390.
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  48. Ebajo, Jr. V.D., C.C. Shen and C.Y. Ragasa, 2014. Triterpenes and sterol from Hoya mindorensis. Der Pharma Chemica, 6: 321-325.
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  49. Alimboyoguen, A.B., K.A. de Castro-Cruz, C.C. Shen, W.T. Li and C.Y. Ragasa, 2014. Chemical constituents of the bark of Aleurites moluccana L. willd. J. Chem. Pharm. Res., 6: 1318-1320.
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  50. Alimboyoguen, A.B., K. de Castro-Cruz, C.C. Shen and C.Y. Ragasa, 2014. Chemical constituents of Anacolosa frutescens. Res. J. Pharm. Biol. Chem. Sci., 5: 1189-1191.
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  51. Tsai, P.W., K. de Castro-Cruz, C.C. Shen and C.Y. Ragasa, 2013. Chemical constituents of Artocarpus camansi. Pharm. J., 5: 80-82.
    CrossRef  |  
  52. Ragasa, C.Y., V.A.S. Ng, O.B. Torres, N.S.Y. Sevilla and K.V.M. Uy et al., 2013. Sterols, triglycerides and essential fatty acid constituents of Brassica oleracea varieties, Brassica juncea and Raphanus sativus. J. Chem. Pharm. Res., 5: 1237-1243.
  53. Ragasa, C.Y., V.A.S. Ng and C.C. Shen, 2013. Triterpenes from Ficus nervosa. J. Chem. Pharm. Res., 5: 1070-1073.
  54. Ragasa, C.Y., O.B. Torres, L.B. Bernardo, E.H. Mandia, M.J. Don and C.C. Shen, 2013. Glabretal-type triterpenoids from Dysoxylum mollissimum. Phytochem. Lett., 6: 514-518.
    CrossRef  |  
  55. Ragasa, C.Y., O.B. Torres, J.V.V. Tongco, R.A. Razal and C.C. Shen, 2013. Resorcinols from Myristica philippensis Lam. J. Chem. Pharm. Res., 5: 614-616.
  56. Ragasa, C.Y., O.B. Torres, G. Soriano and C.C. Shen, 2013. Sterols and triterpenes from the fruit of Annona muricata Linn. Silliman J., 54: 107-113.
  57. Ragasa, C.Y., G.S. Lorena, E.H. Mandia, D.D. Raga and C.C. Shen, 2013. Chemical constituents of Abrus precatorius. Am. J. Essential Oils Nat. Prod., 1: 7-10.
  58. Ragasa, C.Y., F. Lim, D.D. Raga and C.C. Shen, 2013. Hypoglycemic potential of triterpenes from Alstonia scholaris. Pharm. Chem. J., 47: 54-57.
    CrossRef  |  
  59. Ragasa, C.Y., D.L. Espineli, E.M.G. Agoo and C.C. Shen, 2013. Chemical constituents of Cinnamomum griffithii. Chem. Nat. Comp., 49: 127-128.
    CrossRef  |  
  60. Ragasa, C.Y., D.L. Espineli, E.M. Agoo and R.S. del Fierro, 2013. Chemical constituents of Cinnamomum cebuense. Chinese J. Nat. Med., 11: 264-268.
    CrossRef  |  
  61. Ragasa, C.Y., D.L. Espineli, E.M. Agoo and C.C. Shen, 2013. Chemical constituents of Cinnamomum rupestre and Cinnamomum nanophyllum. Chem. Nat. Comp., 49: 757-758.
    CrossRef  |  
  62. Ragasa, C.Y., D.L. Espineli, D.D. Raga, A.A. Herrera and C.C. Shen, 2013. Terpenoids from Ardisia squamulosa. Chem. Nat. Comp., 49: 388-389.
    CrossRef  |  
  63. Ragasa, C.Y. and K.B. Cornelio, 2013. Triterpenes from Euphorbia hirta and their cytotoxicity. Chin. J. Nat. Med., 11: 528-533.
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  64. Ragasa, C.Y. and A.B. Alimboyoguen, 2013. Long chain 4-hydroxycinnamate esters from Allamanda neriifolia Hook. Am. J. Essential oils Nat. Prod., 1: 104-107.
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  65. Ragasa, C.Y. and A.B. Alimboyoguen, 2013. Long chain 4-hydroxy cinnamate esters from Allamanda neriifolia Hook. Am. J. Essential Oils Nat. Prod., 1: 50-53.
  66. Raga, D.D., A.A. Herrera, D. Espineli, C.C. Shen and C.Y. Ragasa, 2013. Triterpenes from Ardisia squamulosa C. Presl (Myrsinaceae) limit angiogenesis and the expression of von willebrand factor in duck chorioallantoic membrane. J. Chem. Pharm. Res., 5: 230-239.
  67. Raga, D.D., A.A. Herrera and C.Y. Ragasa, 2013. Angio-suppressive triterpenoids from Ardisia cf. elliptica (subgenus Tinus) on duck (Anas platyrynchos L.) chorioallantoic membrane. Chinese J. Nat. Med., 11: 128-138.
    CrossRef  |  
  68. Raga, D.D., A. Herrera, C.C. Shen and C.Y. Ragasa, 2013. Triterpenes from Ardisia cf. elliptica (subgenus Tinus) limit vascular density and promote von Willebrand factor expression on duck chorioallantoic membrane. Pharm. Chem. J., 47: 44-49.
    CrossRef  |  
  69. Espineli, D.L., E.M.G. Agoo, C.C. Shen and C.Y. Ragasa, 2013. Chemical constituents of Cinnamomum iners. Chem. Nat. Compounds, 49: 932-933.
    CrossRef  |  Direct Link  |  
  70. Espineli, D.L., E.M. Agoo, C.C. Shen and C.Y. Ragasa, 2013. Chemical constituents of Cinnamomum utile. Chem. Nat. Comp., 49: 769-770.
    CrossRef  |  
  71. Tsai, P.W., K. de Castro-Cruz, C.C. Shen and C.Y. Ragasa, 2012. Chemical constituents of Ficus odorata. Pharm. Chem. J., 46: 225-227.
    CrossRef  |  
  72. Tsai, P.W., K. de Castro-Cruz, C.C. Shen and C.Y. Ragasa, 2012. Chemical constituents of Broussonetia luzonicus. Pharm. J., 4: 1-4.
    CrossRef  |  
  73. Ragasa, C.Y., R.M. Levida, M.J. Don and C.C. Shen, 2012. Cytotoxic isothiocyanates from Moringa oleifera Lam seeds. Philippine Sci. Lett., 5: 46-52.
    Direct Link  |  
  74. Ragasa, C.Y., O.B. Torres, C.C. Shen and J.D. Jacinto, 2012. Chemical constituents of Aglaia loheri. Pharm. J., 4: 29-31.
    CrossRef  |  
  75. Ragasa, C.Y., G. Soriano, O. Torres, M.J. Don and C.C. Shen, 2012. Acetogenins from Annona muricata. Pharm. J., 4: 32-37.
  76. Ragasa, C.Y., D.L. Espineli, E.H. Mandia, M.J. Don and C.C. Shen, 2012. A new triterpene from Glinus oppositifolius. Chinese J. Nat. Med., 10: 284-286.
    CrossRef  |  
  77. Ragasa, C.Y., D.L. Espineli, E.H. Mandia, D.D. Raga, M.J. Don and C.C. Shen, 2012. A new triterpene from Atalantia retusa. Zeitschrift fur Naturforschung B, 67b: 426-432.
  78. Ragasa, C.Y., D.L. Espineli and C.C. Shen, 2012. A new triterpene from Barringtonia asiatica. Nat. Prod. Res., 26: 1869-1875.
    Direct Link  |  
  79. Padla, E.P., L.T. Solis, C.C. Shen, R.M. Levida and C.Y. Ragasa, 2012. Antimicrobial isothiocyanates from Moringa oleifera Lam. Zeitschrift fur Naturforschung C., 67c: 557-564.
  80. Padla, E.P., L.T. Solis and C.Y. Ragasa, 2012. Antibacterial and antifungal properties of ent-kaurenoic acid from Smallanthus sonchifolius. Chinese J. Nat. Med., 10: 408-414.
    CrossRef  |  
  81. Del Fierro, R.S., Q.M.A. Maquilang, R.A.S. Sanjorjo, M.D. Tradio, C.C. Shen and C.Y. Ragasa, 2012. Secondary metabolites from Cinnamomum cebuense. J. Medi. Plants Res., 6: 2146-2149.
  82. Ramos, G.B., C.L. Arguelles, A.A. Herrera, C.Y. Ragasa, 2011. Screening for potential anti-angiogenic property utilizing avian embryo's chorioallantoic membranes (CAMs): II. Garlic (Allium sativum L.) Oil. Asia Life Sci., 20: 13-23.
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  83. Ragasa. C.Y. and L.A.A. Rufino, 2011. Antimicrobial flavonoid fro Hibiscus rosa-sinensisL. Manila J. Sci., 7: 12-18.
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  84. Ragasa, C.Y., L.M. Labaclado and J.A. Rideout, 2011. Triterpenes and sterol from Pouteria campechiana. Manila J. Sci., 6: 1-7.
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  85. Ragasa, C.Y., D.L. Espineli and C.C. Shen, 2011. New triterpenes from Barringtonia asiatica. Chem. Pharm. Bull., 59: 778-782.
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  86. Ragasa, C.Y., A.B. Alimboyoguen, R.S. del Fierro, C.C. Shen and D.D. Raga, 2011. Hypoglycemic effects of tea extracts and sterols from Momordica charantia. J. Na. Remed., 11: 44-53.
    Direct Link  |  
  87. Ragasa, C.Y. amd J.G. Hofilena, 2011. Antimicrobial coumarin derivative from Delonix regia. . Manila J. Sci., 7: 7-11.
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  88. Raga, D.D., R. Espiritu, C.C. Shen and C.Y. Ragasa, 2011. A bioactive sesquiterpene from Bixa orellana. J. Nat. Med., 65: 206-211.
    CrossRef  |  
  89. Raga, D.D., C.L. Cheng, K.C. Lee, W.Z. Olaziman and V.J. De Guzman et al., 2011. Bioactivities of triterpenes and a sterol from Syzygium samarangense. Zeitschrift Fur Naturforschung C, 66: 235-244.
    Direct Link  |  
  90. Raga, D.D., A.B. Alimboyoguen, C.C. Shen and C.Y. Ragasa, 2011. Triterpenoids and an anti-angiogenic sterol from Ardisia pyramidalis Cav. Pers. Philippine Agric. Sci., 94: 103-110.
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  91. Jacinto, S.D., E.A.C. Chun, A.S. Montuno, C.C. Shen, D.L. Espineli and C.Y. Ragasa, 2011. Cytotoxic cardenolide and sterols from Calotropis gigantean. Nat. Prod. Commun., 6: 803-806.
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  92. Ragasa, C.Y., P.W. Tsai, C. Galvez and C.C. Shen, 2010. New carvotanacetone derivatives from Sphaeranthus africanus. Planta Med., 76: 146-151.
    CrossRef  |  PubMed  |  
  93. Ragasa, C.Y., C.J.J. Crisostomo, K.D.C. Garcia and C.C. Shen, 2010. Antimicrobial xanthones from Garcinia mangostana L. Philippine Scie., 47: 63-75.
  94. Ragasa, C.Y., A.B. Alimboyoguen and J.A. Rideout, 2010. An antimicrobial triterpene from Shorea guiso. Kimika, 23: 50-54.
    Direct Link  |  
  95. Raga, D.D., A.B. Alimboyoguen, R.S. del Fierro and C.Y. Ragasa, 2010. Hypoglycemic effects of tea extracts and ent-kaurenoic acid from Smallanthus sonchifolius. Nat. Prod. Res., 24: 1771-1782.
    CrossRef  |  PubMed  |  
  96. Ragasa, C.Y., P.W. Tsai and C.C. Shen, 2009. Terpenoids and sterols from endemic and endangered Philippine trees,Ficus pseudopalma and Ficus ulmifolia. Philippine J. Sci., 138: 205-209.
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  97. Ragasa, C.Y., P.W. Tsai and C.C. Shen, 2009. Antimicrobial terpenoids from Erigeron sumatrensis,. NCPR. Res. J., 10: 27-32.
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  98. Ragasa, C.Y., M.R.A. Puno, J.M.A.P. Sengson, C.C, Shen, J.A. Rideout and D.D. Raga, 2009. Bioactive triterpenes from Diospyros blancoi. Nat. Prod. Res., 23: 1252-1258.
    CrossRef  |  PubMed  |  
  99. Ragasa, C.Y., M.M. Tepora, D.L. Espineli, E. Mandia and J.A. Rideout, 2009. Chromomoric acid derivatives from Tectona philippinensis. J. Nat. Prod., 71: 701-705.
    CrossRef  |  PubMed  |  Direct Link  |  
  100. Ragasa, C.Y., M.M. Tepora and J.A. Rideout, 2009. Antimicrobial activities of sterols from Pycnarrhena manillensis. Chem. Res. Commun., 23: 31-34.
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  101. Ragasa, C.Y., M.J. Apuada and J.A. Rideout, 2009. Terpenoids from Taraxacum officinale. NRCP Res. J., 10: 17-26.
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  102. Ragasa, C.Y., A.B. Alimboyoguen and C.C. Shen, 2009. Antimicrobial terpenoids from Elephantopus mollis. NRCP Res. J., 10: 33-38.
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  103. Ragasa, C.Y., A.B. Alimboyoguen and C.C. Shen, 2009. Antimicrobial triterpenes from Dillenia philippinensis. Philippine Sci., 46: 78-87.
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  104. Ragasa. C.Y., J.P. de Jesus, M.J. Apuada and J.A. Rideout, 2008. A new sesquiterpene from Artemisia vulgaris. J. Na. Med., 62: 461-463.
    CrossRef  |  PubMed  |  Direct Link  |  
  105. Ragasa. C.Y., A.B. Alimboyoguen, S. Urban and D.D. Raga, 2008. A bioactive diterpene from Smallanthus sonchifolius. Nat. Prod. Re., 22: 814-819.
    CrossRef  |  PubMed  |  
  106. Ragasa. C.Y., A.B. Alimboyoguen, S. Urban and D.D. Raga, 2008. A bioactive diterpene from Smallanthus sonchifolius. Nat. Prod. Commun., 3: 1663-1666.
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  107. Ragasa, C.Y., M.C. Lapina, J.J. Lee, E.H. Mandia and J.A. Rideout, 2008. Secondary metabolites from Tectona philippinensis. Nat. Prod. Res. Part A, 22: 820-824.
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  108. Ragasa, C.Y., J. Wong and J.A. Rideout, 2008. Monoterpene glycoside and flavonoids from Blumea lacera. J. Nat. Med., 61: 474-475.
    CrossRef  |  
  109. Ragasa, C.Y., H.K.P. Ha, M. Hasika P.D. Gaspillo, J.B. Maridable and J.A. Rideout, 2008. Antimicrobial and cytotoxic terpenoids from Cymbopogon citrates Stapf. Philippine Sci., 45: 111-122.
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  110. Ragasa, C.Y., A.B. Alimboyoguen and S. Urban, 2008. Structure elucidation of a diterpene from Smallanthus sonchifoliusi by NMR Spectroscopy. Res. J., 225: 57-59.
  111. Ragasa, C.Y., A. de los Santos and J.A. Rideout, 2008. An antimicrobial and cytotoxic labdane diterpene from Andrographis paniculata. Chem. Res. Commun., 22: 44-48.
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  112. Janairo, J.R.O., G.C. Janairo, C.Y., Ragasa and B.F. Bowden, 2008. A marine verticillane diterpenoid from Cespitularia erecta. Nat. Prod. Res., 22: 48-52.
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  113. Ragasa, C.Y., M.M. Tepora and J.A. Rideout, 2007. Terpenoids from Tithonia diversifolia. J. Res. Sci. Comput. Eng., 4: 1-7.
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  114. Ragasa, C.Y., L.E.N. Pimenta and J.A. , Rideout, 2007. Iridoids from Gardenia jasminoides. Nat. Prod. Res., 21: 1078-1084.
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  115. Ragasa, C.Y., D.L. Espineli and J.A. Rideout, 2007. Triterpenes from Emilia sonchifolia. Res. J., 21: 23-26.
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  116. Ragasa, C.Y., A.T. Martinez, J.E.Y. Chua and J.A. Rideout, 2007. A triterpene from Musa errans. Philippine J. Sci., 136: 167-171.
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  117. Ragasa, C.Y., A.B., Alimboyoguen and J.A. Rideout, 2007. A triterpene from Rosa sp. J. Res. Sci. Comput. Eng., 4: 1-5.
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  118. Janairo, J.R.O., G.C. Janairo, C.Y. Ragasa, 2007. A new fatty acid ester of a dolabellane diterpene from Clavularia sp. J. Res. Sci. Comput. Eng., 4: 51-59.
  119. Janairo, J.R.O., G.C. Janairo, C.Y. Ragasa and B.F. Bowden, 2007. New xenicanes from Xenia viridis. Nat. Prod. Res., 21: 1067-1072.
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  120. Ragasa, C.Y., P. Labrador and J.A. Rideout, 2006. Antimicrobial terpenoids from Lansium domesticum. Philippine Agric. Sci., 89: 101-105.
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  121. Ragasa, C.Y., M.M. Tepora and J.A. Rideout, 2006. An antimicrobial germacranolide from Michelia champaca. CvSU Res. J., 20: 13-15.
  122. Ragasa, C.Y., J.E. Sia and J.A. Rideout, 2006. Antimicrobial flavonoid from Citrus microcarpa. CvSU Res. J., 20: 16-19.
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  123. Ragasa, C.Y., R.D. de Luna, W.C. Cruz and J.A. Rideout, 2005. Monoterpenelactones from the seeds of Nephelium lappaceum. J. Nat. Prod., 68: 1394-1396.
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  124. Ragasa, C.Y., R.D. De Luna and J.G. Hofilena, 2005. Antimicrobial terpenoids from Pterocarpus indicus. Nat. Prod. Res., 19: 305-309.
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  125. Ragasa, C.Y., M. Laguardia and J. Rideout, 2005. Antimicrobial sesquiterpenoids and diarylheptanoid from Curcuma domestica. ACGC Chem. Res. Commun., 18: 21-24.
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  126. Ragasa, C.Y., L.M.A. Navaja, L.E.N. Pimenta and J.A. Rideout, 2005. Terpenoids and sterol from Pteridium aquilinum and Bryophyllum pinnatum. CvSU Res. J., 19: 44-49.
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  127. Ragasa, C.Y., J.G. Hofilena, A.L.K.C. Co and J. Rideout, 2005. Antifungal diacetylglycerols from Malachra fasciata and Pithecolobium dulce. ACGC Chem. Res. Commun., 19: 1-5.
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  128. Ragasa, C.Y., H.T. Ngo and J.A. Rideout, 2005. Terpenoids and sterols from Lagerstroemia speciosa. J. Asian Nat. Prod. Res., 7: 7-12 .
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  129. Ragasa, C.Y., F. Tiu and J. Rideout, 2005. Triterpenoids from Chrysanthemum morifolium. ACGC Chem. Res. Commun., 18: 11-17.
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  130. Ragasa, C.Y., A.L. Co and J.A. Rideout, 2005. Antifungal metabolites from Blumea balsamifera. Nat. Prod. Res., 19: 231-237.
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  131. Ragasa, C.Y. and M.C. Cruz, 2005. Antimicrobial diterpenes from Tinospora rumphii. J. Res. Sci. Eng., 2: 30-34.
  132. Ragasa, C.Y. and K. Lim, 2005. Sterols from Cucurbita maxima. Philippine J. Sci., 134: 83-87.
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  133. Ragasa, C.Y. and K. Lim, 2005. Secondary metabolites from Schefflera odorata Blanco. Philippine J. Sci., 134: 63-67.
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  134. Ragasa, C.Y., K. Jorvina and J.A. Rideout, 2004. Triterpenes and sterols from Achras zapota. KIMIKA, 20: 1-4.
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  135. Ragasa, C.Y., K. Jorvina and J.A. Rideout, 2004. Antimicrobial compounds from Artocarpus heterophyllus. Philippine J. Sci., 133: 97-101.
  136. Ragasa, C.Y., J.G. Hofilena and J.A. Rideout, 2004. Secondary metabolites from Bauhinia purpurea. Philippine J. Sci., 133: 1-5.
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  137. Ragasa, C.Y., F. Tiu and J.A. Rideout, 2004. New cycloartenol esters from Ixora coccinea. Nat. Prod. Res. : Formerly Nat. Prod. Lett., 18: 319-323.
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  138. Cayme, J.M.C. and C.Y. Ragasa, 2004. Structure elucidation of β-stigmasterol and β-sitosterol from Sesbania grandiflora Linn. Pers. and β-Carotene from Heliotropium indicum Linn. by NMR Spectroscopy. Kimika, 20: 5-12.
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  139. Alimboyoguen, A.B., C.Y. Ragasa, P. Roque and A. Ng, 2004. Sterols and carotenoid from Brugmansia suaveolens. CvSU Res. J., 18: 36-37.
  140. Rideout, J., H.T. Ngo and C.Y. Ragasa, 2003. Polyprenols from Jatropha curcas L. with unusual ions in electrospray ionisation mass spectroscopy. ACGC Chem. Res. Commun., 16: 40-47.
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  141. Ragasa, C.Y., J. Ganzon, J. Hofilena, B. Tamboong and J.A. Rideout, 2003. A new furanoid diterpene from Caesalpinia pulcherrima. Chem. Pharmaceutical Bull., 51: 1208-1210.
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  142. Ragasa, C.Y., E.S.C. Javier and I.G. Tan, 2003. Antimutagenic terpenes and sterols from Vitex parviflora. Philippine J. Sci., 132: 21-25.
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  143. Ragasa, C.Y., B. Tamboong and J.A. Rideout, 2003. Secondary metabolites from Jasminum sambac and Cananga odorata. ACGC Chem. Res. Commun., 16: 40-47.
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  144. Ragasa, C.Y., N. Tremor and J.A. Rideout, 2002. Ionone derivatives from Alternanthera sessilis. J. Asian Nat. Prod. Res., 4: 109-115.
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  145. Ragasa, C.Y., J.G. Hofilena and J.A. Rideout, 2002. New Furanoid Diterpenes from Caesalpinia pulcherrima. J. Nat. Prod., 65: 1107-1110.
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  146. Ragasa, C.Y., D. Borja, R. Bassig and J.A. Rideout, 2002. Antifungal compounds from Anacardium occidentale. Philippine J. Sci., 131: 9-16.
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  147. Hofilena, J.G. and C.Y. Ragasa, 2002. A monoteroene from Pterocarpus indicus (Leguminosae). Kimika, 18: 5-8.
  148. Ragasa, C.Y., V.F. Templora and J.A. Rideout, 2001. Diastereomeric diterpenes from Coleus blumei. Chem. Pharmaceutical Bull., 49: 927-929.
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  149. Ragasa, C.Y., R. Dumag and J.A. Rideout, 2001. Antimicrobial compounds from Mentha cordifolia. Philippine J. Sci., 130: 39-43.
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  150. Ragasa, C.Y., J. Yumul, J. Guanzon and J.A. Rideouf, 2001. Antimicrobial triterpenes and sterols from Pseuderanthemum bicolor. Kimika, 17: 1-4.
  151. Ragasa, C.Y., A. Poblete and E. Navida, 2001. Antimicrobial compounds from Spondias purpurea. Manila J. Sci., 4: 24-28.
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  152. Ragasa, C.Y. and J.A. Rideout, 2001. An antifungal cadinanolide from Pseudoelephantopus spicatus. Chem. Pharmaceutical Bull., 49: 1359-1361.
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  153. Ragasa, C.Y., M.C. Cruz, R. Gula and J.A. Rideout, 2000. Clerodane diterpenes from Tinospora rumphii. J. Nat. Prod., 63: 509-511.
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  154. Ragasa, C.Y., J. Laygo and J. Rideout, 2000. Antimicrobial biflavone from Araucaria bidwillii. Kimika, 16: 65-67.
  155. Ragasa, C.Y., J. Hofilena and J. Rideout, 2000. Lignans from Gliricidia sepium. ACGC Chem. Res. Commun., 10: 52-60.
  156. Ragasa, C.Y., E. Morales and J.A. Rideout, 2000. A flavone from Vitex parviflora. Manila J. Sci., 3: 6-9.
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  157. Hofilena, J.G., C.Y. Ragasa and J.A. Rideout, 2000. An antimicrobial and antimutagenic anthraquinone from Cassia alata. ACGC Chem. Res. Commun., 10: 15-20.
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  158. Alea, G.V. and C.Y. Ragasa, 2000. Diterpenes from the soft coral Clavularia inflate (Coelenterata, Octocorallia, Stolonifera). Manila J. Sci., 3: 25-33.
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  159. Ragasa, C.Y., Z. Pendon, V. Sangalang and J. Rideout, 1999. Flavones from Coleus amboinicus. Philippine J. Sci., 128: 347-351.
  160. Ragasa, C.Y., G.V. Alea and J.A. Rideout, 1999. An antimicrobial sesquiterpene lactone from Pseudoelephantopus spicatus. Manila J. Sci., 2: 27-31.
  161. Ragasa, C.Y., E.A. Juan and J.A. Rideout, 1999. A triterpene from Ficus pumila. J. Asian Nat. Product. Res., 1: 269-275.
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  162. Ragasa, C.Y., E. Morales and J.A. Rideout, 1999. Antimicrobial compounds from Vitex negundo. Philippine J. Sci., 128: 21-29.
  163. Ragasa, C.Y., V.M. Intel and J.A. Rideout, 1998. An antimicrobial alkaloid from Catharanthus roseus. Manila J. Sci., 1: 19-27.
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  164. Ragasa, C.Y., R. Daniel and J.A. Rideout, 1998. An antifungal tetranortriterpenoid from Swietenia macrophylla. Kimika, 14: 21-25.
  165. Ragasa, C.Y., M.M. Tepora and J. Rideout, 1998. Antimicrobial chromenes from Eupatorium toppingianum. ACGC Chem. Res. Commun., 7: 54-61.
  166. Ragasa, C.Y., M. Dumato and J. Rideout, 1998. Antifungal compounds from Peperomia pellucid. ACGC Chem. Res. Commun., 7: 48-53.
  167. Ragasa, C.Y., J. Sy, J.C. Coll, J.A. Rideout, 1998. A bioactive monoterpene ester from Erigeron linifolius. Asia Life Sci., 7: 1-9.
  168. Ragasa, C.Y., G.M. Natividad and J.A. Rideout, 1998. An antifungal diterpene from Chrysanthemum coronarium. Kimika, 14: 17-20.
  169. Ragasa, C.Y., B.A. Penalosa and J. Rideout, 1998. A bioactive dipeptide derivative from Malachra fasciata. Philippine J. Sci., 127: 267-276.
  170. Inte, V.M., C.Y. Ragasa and J.A. Rideout, 1998. Triterpenes, hydrocarbons and an antimutagenic alkaloids from Catharanthus roseus. Asia Life Sci., 7: 11-21.
  171. Ragasa, C.Y., Z.D. Nacpil, G.M. Natividad, M. Tada, J.C. Coll and J.A. Rideout, 1997. Tetranortriterpenoids from Azadirachta indica. J. Phytochem., 46: 555-558.
  172. Ragasa, C.Y., Z.D. Nacpil, B.A. Penalosa, J.C. Coll and J.A. Rideout, 1997. Antimutagen and antifungal compounds from Cosmos caudatus. Philipp. J. Sci., 126: 199-206.
  173. Ragasa, C.Y., V. Agbayani, R.B. Hernandez and J.A. Rideout, 1997. An antimutagenic monoterpene from Malachra fasciata. Philippine J. Sci., 126: 183-189.
  174. Ragasa, C.Y., L. Maliwat and B.F. Bowden, 1997. Antifungal and antimutagenic terpenes from Hyptis suaveolens. Kimika, 13: 17-21.
  175. Ragasa, C.Y., J.O. Sy, J.C. Coll, V.M.L. Inte and J.A. Rideout, 1997. Bioactive monoterpene glycosides from Erigeron linifolius. Phytochemistry, 46: 151-154.
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  176. Ragasa, C.Y., J.A. Rideout, J.C. Coll and D.S. Tierra, 1997. Sesquiterpene glycosides from Pittosporum pentandrum. Phytochemistry, 45: 545-547.
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  177. Ragasa, C.Y., G.M. Natividad and J.A. Rideout, 1997. A bioactive thiophene derivative from Chrysanthemum coronarium. Philipp. J. Sci., 126: 275-281.
  178. Ragasa, C.Y., C.A. Cruz, I.D. Chiong, M. Tada and J.A. Rideout, 1997. Antifungal flavonoids from Waltheria Americana. Philipp. J. Sci., 126: 243-250.
  179. Nacpil, Z.D., C.Y. Ragasa, J.A. Rideout and J.C. Coll, 1997. Antimutagenic diterpenes from Andrographis paniculata. Kimika, 13: 11-16.
  180. Maliwat, L., C.Y. Ragasa and M. Tada, 1997. Alkaloid and saponin from Argemone mexicana. Kimika, 13: 7-9.
  181. Largo, G., J.A. Rideout and C.Y. Ragasa, 1997. A bioactive carotenoid from Mimosa invisa. Philippine J. Sci., 126: 107-114.
  182. Juan, E.A., J.A. Rideout and C.Y. Ragasa, 1997. Bioactive furanocoumarin derivatives from Ficus pumila. Philippine J. Sci., 126: 143-153.
  183. Barre, J.T., B.F. Bowden, J.C. Coll, J. de Jesus, V.E. de La Fuente, G.C. Janairo and C.Y. Ragasa, 1997. A bioactive triterpene from Lantana camara. Phytochemistry, 45: 321-324.
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  184. Largo, G., C.Y. Ragasa , J.C. Coll and J.A. Rideout, 1996. A bioactive chromene from Eupatorium toppingianum. Kimika, 12: 11-14.
  185. Zulueta, M.C.A., M. Tada and C.Y. Ragasa, 1995. A diterpene from Bidens pilosa. Phytochemistry, 38: 1449-1450.
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  186. Ragasa, C.Y., J. Sy, V. Agbayani, R. Infante, M. Abaya and J.C. Coll, 1995. Antimutagens from Elephantopus scaber. Kimika, 11: 25-28.
  187. Ragasa, C.Y., I.D. Chiong and Z.D. Nacpil, 1995. Antimutagens from Vernonia cinerea. Agham, 19: 1-7.
  188. Ragasa, C.Y., 1995. Flavanones and triterpenes from Ageratum conyzoides. Agham, 19: 21-25.
  189. Ragasa, C.Y., W.G. Padolina, T. Yamauchi, H. Otsuka, K. Yamasaki and T. Satoh, 1993. Germacranolides from Pseudoelephantopus spicatus. Phytochemistry, 33: 627-629.
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  190. Ragasa, C.Y., Padolina, W.G., B.F. Bowden, S. Li, D.M. Tapiolas and J.C. Coll, 1993. New eudesmanolide sesquiterpenes from a Philippines collection of Wedelia prostate. J. Nat. Prod., 56: 386-393.
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