Triterpenes from the leaves of Glochidion obliquum

Vu Kim Thu, Le Thi Kieu Anh, Dang Ngoc Quang, Nguyen Van Thang, Hoang Le Tuan Anh, Nguyen Xuan Nhiem, Dan Thi Thuy Hang, Chau Van Minh, Phan Van Kiem

Abstract


Using combined chromatographic methods, six tritrerpenes, 5b,6b-epoxytaraxeran-3b-ol (1), 3β-hydroxyglutin-5-ene (2), friedelan-3-one (3), lupeol (4), glochidonol (5), and glochidone (6) were isolated from the methanol extract of the leaves of Glochidion obliquum Decne. Their structures were elucidated by 1D- and 2D-NMR spectra and in comparison with those reported in the literature. Of which, compound 1 was reported from nature for the first time.


Keywords


Glochidion obliquum, triterpene, 5,6-epoxytaraxeran-3-ol, 3β-hydroxyglutin-5-ene, friedelan-3-one

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