论文部分内容阅读
前文已报道从水母雪莲(Saussurea Medusa Maxim)中分得4种黄酮甙,本文报道另外6种化合物的分离和鉴定。 1 化合物Ⅰ—Ⅳ物化性质及分离鉴定 1.1 化合物Ⅰ 黄色结晶,m.p.:249～251℃,水解所得甙元鉴定为木樨草素,纸层析检出鼠李糖和葡萄糖。MS(FAB):m/z 595(M~++1),287(M~++H-葡萄糖基-鼠李糖)。化合物I与木樨草素的~(13)C NMR比较,C_6、C_8、C_(10)分别向低场位移1.1、1.0、1.8 ppm,而C,向高场移动
It has been previously reported that four flavonoid glycosides were isolated from Saussurea Medusa Maxim, and the isolation and identification of six additional compounds is reported herein. 1 Compound Ⅰ-Ⅳ physico-chemical properties and isolation and identification 1.1 Compound Ⅰ yellow crystal, m.p .: 249 ~ 251 ℃, hydrolyzed glycosides identified as clodronine, paper chromatography rhamnose and glucose. MS (FAB): m / z 595 (M~ ++ 1), 287 (M~ ++ H -glucosyl-rhamnose). Compared with the ~ (13) C NMR of compound I and clodronine, C_6, C_8 and C_ (10) shifted 1.1, 1.0 and 1.8 ppm to lower field, respectively.