Chemical constituents from the leaves of Psidium guajava |
| |
| Authors: | Begum Sabira Hassan Syed Imran Ali Syed Nawazish Siddiqui Bina S |
| |
| Institution: | H.E.J. Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi-75270, Pakistan. sabira@khi.comsats.net.pk |
| |
| Abstract: | Five constituents including one new pentacyclic triterpenoid guajanoic acid (1) and four known compounds beta-sitosterol (2), uvaol (3), oleanolic acid (4), and ursolic acid (5) have been isolated from the leaves of Psidium guajava. The new constituent 1 has been characterized as 3beta-p-E-coumaroyloxy-2alpha-methoxyurs-12-en-28-oic acid through 2D NMR techniques and chemical transformations. This is the first report of isolation of compound 3 from the genus Psidium. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
