期刊
NATURAL PRODUCT LETTERS
卷 16, 期 3, 页码 173-177出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10575630290004251
关键词
Psidium guajava; Myrtaceae; leaves; triterpenoids; guajavanoic acid
Three pentacyclic triterpenoids including one new guajavanoic acid (2) and two known obtusinin (1) and goreishic acid I (3) have been isolated from the leaves of Psidium guajava. The new constituent 2 has been characterized as 2alpha-hydroxy-3beta-p-E-coumaroyloxyurs-12, 18-dien-28-oic acid through H-1-NMR and, C-13-NMR (broad band and DEPT). This is the first report of isolation of compound 1 and 3 from the genus Psidium.
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