Steroidal glycosides from Agave cantala.

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作者信息

Uniyal G C, Agrawal P K, Thakur R S, Sati O P

机构信息

Central Institute of Medicinal & Aromatic Plants, Lucknow, India.

出版信息

Phytochemistry. 1990;29(3):937-40. doi: 10.1016/0031-9422(90)80050-q.

DOI:10.1016/0031-9422(90)80050-q

PMID:1366482

Abstract

Two new steroidal glycosides, agaveside A and B, isolated from the fruits of Agave cantala were characterized as 3 beta-O-[beta-D-xylopyranosyl-(1----2),beta-D-xylopyranosyl-(1----3), beta-D-glucopyranosyl-(1----3)-[beta-D-xylopyranosyl-(1----3)-beta-D- galactopyranosyl-(1----2)]-beta-D-glucopyranosyl]-(25R)-5 alpha-spirostane and 3 beta-O-[beta-D-xylopyranosyl-(1----2), beta-D-xylopyranosyl-(1----3)-beta-D-glucopyranosyl-(1----3)- [beta-D-galactopyranosyl-(1----2)]-beta-D-glucopyranosyl]-(25R)-5 alpha-spirostane. The structures were elucidated by a combination of 13CNMR spectroscopy, chemical degradation and fast atom bombardment mass spectrometry.

摘要