A new ethylene glycol triterpenoid from the leaves of Psidium guajava |
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| Authors: | Begum Sabira Ali Syed Nawazish Hassan Syed Imran Siddiqui Bina S |
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| Affiliation: | H.E.J. Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi 75270, Pakistan. sabira@khi.comsats.net.pk |
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| Abstract: | One new pentacyclic triterpenoid psidiumoic acid (5) along with four known compounds beta-sitosterol (1), obtusol (2), oleanolic acid (3), and ursolic acid (4) have been isolated from the leaves of Psidium guajava. The new constituent 5 has been characterized as 2 alpha-glycolyl-3beta-hydroxyolean-12-en-28-oic acid through 2D NMR techniques. This is the first report of isolation of compound 2 from the genus Psidium. |
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