石蝉草中的三个新黄酮苷

Three new flavonoid glycosides from Peperomia dindygulensis

摘要: 为了研究石蝉草的化学成分，用色谱法进行分离纯化，从石蝉草的正丁醇萃取部位分离得到3个化合物，根据光谱数据和理化性质进行结构鉴定，分别鉴定为阿拉波亭-4′，7-二甲醚-8-O-β-D-葡糖苷(I)、异高黄芩素-4′-甲醚-8-O-α-L-阿拉伯糖基(1→4)-β-D-葡糖苷(II)、异高黄芩素-4′，7-二甲醚-8-O-α-L-阿拉伯糖基(1→4)-β-D-葡糖苷(III)。化合物I，II，III均为新化合物。

Abstract: To study the chemical constituents of Peperomia dindygulensis Miq., chromatography was used to isolate and purify the chemical constituents, their structures were elucidated by spectroscopic data and physical-chemical properties. Three compounds were obtained. They were identified as: hypolacetin-4′,7-dimethyl ether-8-O-β-D-glucopyranoside (I), isoscutellarein-4′-methyl ether-8-O-α-L-arabinopyranosyl-(1→4)-β-D-glucopyranoside (II), isoscutellarein-4′,7-dimethyl ether-8-O-α-L-arabinopyranosyl-(1→4)-β-D-glucopyranoside (III). Compounds I, II and III are all new compounds.