A new friedelane-type triterpene from Salacia cochinchinensis / 中草药

ABSTRACT

Objective: To study the chemical constituents of Salacia cochinchinensis. Methods: The isolates were obtained by silica gel, Sephadex LH-20, MCI column chromatography, as well as prep-HPLC methods. Their structures were indentified on the basis of NMR, MS analyses. Results: Eight compounds were isolated from 90% ethanol extract of S. cochinchinensis. The structures were identified as 28-hydroxyl salaspermic acid (1), pachysandiol A (2), pristimeronol (3), 28-hydroxy-friedelan-3-one-29-oic acid (4), kaempferol-3-O-α-L-rhamnoside (5), 6,7-dimethoxy-4-hydroxyl-1-naphthoic acid (6), grasshopper ketone (7), 3,4,5-trimethoxyl benzoic acid methyl ester (8). Conclusion: Compound 1 is a new friedelane-type triterpenoid. Compounds 2-8 were isolated from the Salacia genus for the first time.