Four new minor spirostanol glycosides from Helleborus thibetanus

Phytochemistry Letters（2016）

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摘要

•Four new minor steroidal glycosides were isolated from Helleborus thibetanus.•Structures were determined by 2D NMR, HRMS and hydrolysis.•Steroidal glycosides with double bond at C-25 and glycosidation at 1-OH are unusual.

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关键词

Helleborus,Ranunculaceae,Steroidal saponins,Spirostanol saponins

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