Nonato, Maribel G.

Ph.D. Organic Chemistry -Natural Products Chemistry (University of Wollongong, NSW,   Australia), 1993
M.Sc. Chemistry (University of Santo Tomas, Manila), 1986
B.S. Chemistry (University of Santo Tomas, Manila), 1978

Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Present Position

Dean, College of Science, UST
Address:    Dean’s Office, College of Science, 3rd Flr., Main Bldg.
University of Santo Tomas

Other Positions

Member, Graduate School Faculty Council (June 1, 2008 – present)
Member, UST Scholarship Committee (June 1, 2008 – present)
Researcher, Research Center for the Natural Sciences
Member, Administration Group, Dangal 2009

Birth date/place

31 July 1957. Manila

Membership/Position in Professional Organizations

President, Philippine Federation of Chemistry Societies (March 2008 – present)
President, Organic Chemistry Teacher’s Association of the Philippines (2000-present)
Secretary, Natural Products Society of the Philippines (7 April 2005 – present)
Board of Director, Kapisanan ng Kimika sa Pilipinas ( 2006-present)

Research interests

•    Chemical and Biological Potentials of the Genus Pandanus in the Philippines:
•    Bioassay-guided Isolation and structure elucidation.
•         Natural Products with biological activity particularly antimicrobial, antimycobacterial agents and anti-inflammatory from ethnomedicinal plants.
•    Chemotaxonomy

Publications

Nonato,Maribel, Garson, Mary J and Takayama, Hiromitsu. (2008) Chapter on Pandanus Alkaloids : Chemistry and Biology Vol 66 in the book series The Alkaloids: Chemistry and Biology, pp215-249,  G.A. Cordell (Editor), Elsevier Publication.

Tan, Mario A., Takayama, Hiromitsu, Aimi, N., Kitajima, M., Franzblau, S. G. and Nonato, Maribel (2008) Antitubercular Triterpenes and Phytosterols from Pandanus tectorius Soland var. laevis Journal of Natural Medicines , 62:232-235.

Lopez, D, Takayama, H. T. Ichikawa, M. Kitajima, M. Nonato and N. Aimi (2005), Alkaloids from Pandanus amaryllifolius Collected from Marikina, Philippines, Philippine Journal of Science, 134(1):39-44 June 2005 ISSN 0031-7683

Guidebook to Plant Screening: Phytochemical and Biological (2004), Contributor, Phytochemistry Section, Dr. Beatrice Q. Guevara (Editor), UST Printing Press.

Takayama, H. T. Ichikawa, M. Kitajima, M. Nonato and N. Aimi (2002) Isolation and Structure Elucidation of Two New Alkaloids, Pandamarilactonine-C and –D, from Pandanus amaryllifolius and Revision of Relative Stereochemistry of Pandamarilactonine-A and –B by Total Synthesis, Chem. Pharm. Bull 50(9):1303-1304.

Franzblau, S. G., Dalisay D. S., Nonato, M. G., Gelvero, S. G., Sabordo, L. C., and Erazo, J. M. (2001) Natural Products Studies of Plants in Brgy Camandag, leon, Iloilo: Alkaloid Field Survey, Antibacterial Activity Evaluation and Screening for Bioactive Compound by TLC, Scientific Augustinian (Journal of the Mendel Institute for Science and Technology Research), Sept. 2001, No. 1 6-32.

Takayama, H., Ichikawa, T., Kitajima, M., Aimi, N nd Nonato, M.G. (2001)Isolation and Structure Characterization of Two New Alkaloids, Norpandamarilactonine-A and –B in Pandanus amaryllifolius Roxb., by Spectroscopic and Synthetic Methods. Journal of Natural Products 64(9), 1224-1225

Takayama, H., Ichikawa, T., Kitajima, M., Aimi, N, Lopez, D. and Nonato, M.G. (2001) A New Alkaloid , Pandanamine; finding of an Anticipated Biogenetic Intermediate in Pandanus amaryllifolius Roxb.. Tetrahedron Letter, 42 2995-2996.

Nonato, M. 2000. Proceedings on the Symposium on Scientific Research for Susdtained Use and Efficient Management of Natural Resources. International Foundation for Science, NRCP, DOST.

Takayama, H., Ichikawa, T., Kuwajhima, T., Kitajima, M., Seki, H., Aimi, N and Nonato, M.G. (2000) Structure Characterization, Biomimetic Total Synthesis, and Opitcal Purity of Two New Pyrrolidine Alkaloids , Pandamarilactonine-A and –B, Isolated from Pandanus amaryllifolius Roxb. Journal of the American Chemical Society, 122 (36):8635-8639

Ysrael, M. C. , Waterman, P. G. and Nonato, M. G. (2000) The Complete NMR Assignment of the Alkaloids of Ipomoea muricata (L.) Jacq. Convolvulaceae, KIMIKA 16(1): 25-30.

Ysrael, M and Nonato, M. G. (1999) Biological Activities of Chemical Constituents from Ipomoea muricata (Jacq.) Convolvulaceae, Acta Manilana, 47:41-52

Takayama, H., Kuwajima, T., Kitajima, M, Nonato, M., and Aimi, N. (1999) “ Isolation of Lignans and Ionone-Type Sesquiterpenes from the Leaves of Okinawan Pandanus tectorius”  Natural Medicines, 53(6): 335.

Ualat, C. R, Nonato, M. G. and Waterman, P. G. (1999) "Vomifoliol, a False Positive Alkaloid from c.f. P. nobilis x P. vidalii (Pandanaceae)" Kimika, 15(1):17-20.

Takayama, H., Kuwajima, T., Kitajima, M, Nonato, M., and Aimi, N. (1999) "First  Synthesis of the Pandanus Alkaloids Pandamarilactams-3Y and -3X" Heterocycles, 50(1):75-78.

Aguinaldo, A. M., Espeso, E. I., Estrada, B. R., Garcia, C. P., Guevara, B. Q. and Nonato, M. G. (1998), "Alkaloids" Philippine Science Encyclopedia, p77-93, National Research Council of the Philippines, Manila.

Nonato, M. G., Waterman, P. and Ysrael, M. “The Identification of Phenylpropanoid, Phenylpropanoid Glycosides  and a Phenylethanol Diglucoside from Ipomoea muricata L. Jacq. Convolvulaceae” (1997) Acta Manilana, vol. 45, p. 13-20.

Nonato, M. G. and Madulid, R, “ Alkaloid – Bearing Pandanus Species in Luzon, Philippines (1997), Acta Manilana , vol. 45, p. 21-28.

Nonato, M. G., Garson, M. J., and R. J. W. Truscott  (1996) “ Vomifoliol from Graptophyllum pictum Griff.” ACGC Chemical Research Communication, vol 4, p1.

Briones, A., Sashida, Y., Nonato, M., Bonifacio, T. A., Villanueva, M. A., Sison, F. M., Rabang, B. C., Paras, Y. C., Estrella, R. R. and Gayomali, C. P. (1995) “Synephrine: An Adrenergic Drug from Calamansi Wastes”, The Philippine Journal of Science, Oct-Dec. 1995 124(4):         311-325.

Ysrael, M., Santiago, C and Nonato, M. G. (1995) “Diuretic Study on Five Pandanus Species”, Acta Manilana, 43: 25-30.

Nonato, M. G. (1995) “Antimicrobiological Assays”, Manual on Biological Assays and Phytochemical Techniques, National Workshop on Bioassay and Phytochemical Testing, University of the Philippines in the Visayas, Miag-ao, Iloilo, 24-27 October 1995

Nonato, M. G., Garson, M. J., Truscott, R. J. W., Carver, J. A., and
Hemling, M. E. Glucoindole Alkaloids from Ophiorrhiza acuminata Linn. (Rubiaceae) (1995) Planta Medica 61(3):278-280.

Nonato, M. G., Garson, M. J., Truscott, R. J. W., and  Carver, J. A., (1993) Structural Characterization of Novel Piperidine Alkaloids from Pandanus amaryllifolius Roxb. (Pandanaceae) by Inverse-Detection 2-D NMR Techniques, Phytochemistry. 34(4):1159-1163    
Aguinaldo A. M., Espeso, E. I., Garcia, C. P., Guevara, B. Q., Nonato, M. G., and Recio, B. V., (1992), “Alkaloid Studies on Selected Philippine Plants”, National Research Council of the Philippines Research Journal (1992), 1(1):76-82.

Nonato, M. G., Garson, M. J., Truscott, R. J. W., and Carver, J. A. (1990), “1H - NMR Assignments of Anonaine and Xylopine Derivatives from Talauma gitingensis”, Journal of Natural Products  53(6):1623.

Nonato, M. G., Guevara, B. Q., and Toia, R. F. (1987) Two Antibacterial Compounds from Ipomoea muricata (L.) Jacq. Convolvulaceae,  Acta Manilana 35.