海金沙草中一个新的甾体苷类化合物的分离和结构鉴定

目的：研究海金沙草（Lygodium japonicum）的化学成分。方法：采用硅胶柱层析、Sephadex LH-20柱层析、ODS柱层析等方法进行分离和纯化化学成分，结合化学方法和波谱方法进行结构鉴定。结果：从海金沙草中分离得到4个化合物，分别为：（24R）-stigmastan-3β，5α，6β-triol 3，O-β-D-glucopyranoside（1），6-O-p-coumaroyl-D-glucopyranose（2），6-0-caffeoyl-D-glucopyranose（3），and 1-O-（E）-caffeoyl-β-D-gentiobiose（4）。结论：化合物1为新化合物，化合物2,3，4为首次从海金沙科中分离得到。

A new steroidal glycoside from Lygodium japonicum

To investigate the chemical constituents from the aerial parts of Lygodium japonicum. Methods:Various chromatographic techniques were employed for isolation and purification of the constituents. The structures were elucidated by chemical evidence and spectral methods. Results:A new stigmasterol glycoside,(24R)-stigmastan-3β,5α,6β-triol 3-O-β-D-glucopyranoside (1),together with three known phenolic glycosides:6-O-p-coumaroyl-D-glucopyranose (2),6-O-caffeoyl-D-glucopyranose (3),1-O-(E)-caffeoyl-β-D-gentiobiose (4) were obtained and identified by spectroscopic methods. Conclusion:All compounds were isolated from Lygodiaceae for the first time.