Fargosides A-E, triterpenoid saponins from Holboellia fargesii
- Fu, HS
- Koike, K
- Zheng, Q
- Mitsunaga, K
- Jia, ZH
- Nikaido, T
- Lin, WH
- Guo, DA
- Zhang, LH
DOIAbstract
Five new triterpenoid saponins, fargosides A, B, C, D, and E, were isolated from the roots of Holboellia fargesii. The structures of fargosides A-E were elucidated on the basis of chemical and physicochemical evidence and found to be 3 beta ,20 alpha -dihydroxy-29-norolean-12-en-28-oic acid 3-O-beta -D-xylopyranosyl-(1 -->2)-beta -D-glucopyranoside (1), 3 beta ,20 alpha ,24-trihydroxy-29-norolean-12-en-28-oic acid 23-O-beta -D-fucopyranosyl-(1 -->2)-[alpha -L-arabinopyranosyl-(1 -->3)]-beta-upsilon -glucopyranoside (2), 3,beta ,23-dihydroxy-30-norolean-2,20(29)-dien-28-oic acid 3-O-alpha -L-arabinopyranosyl-(1 -->2)-[beta -D-glucopyranosyluronic acid-(1 -->3)]-alpha -L-arabinopyranoside (3), 3 beta ,23-dihydroxy-30-norolean-1...
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