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Published on: August 16, 2018
A new ethylene glycol triterpenoid from the leaves of Psidium guajava
Sabira Begum1, Syed Nawazish Ali, Syed Imran Hassan
1H.E.J. Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi 75270, Pakistan. sabira@khi.comsats.net.pk
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.
