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继前报后,又从异叶梁王茶[Nothopanax davidii(France)Harms]树皮中分离得到两种五环三萜皂甙。经化学和波谱(IR,~1HNMR,~(13)CHMR,~1H-~1HCOSY,~(13)C-~1H COSY,MS)分析,分别鉴定为3-O-α-(2’,4’-O-二乙酰基)-L-吡喃阿拉伯糖-3β-羟基齐墩果-12-烯-28,29-双羧酸-28-O-[α-L-吡喃鼠李糖(1-4)-β-D-吡喃葡萄糖(1—6)-β-D-吡喃葡萄糖]酯甙(Ⅲ),命名为异叶梁王茶甙Ⅲ和3-O-β-(2-O-乙酰基)-D-吡喃木糖-3β-羟齐墩果-12-烯-28,29-双羧酸甙(Ⅳ),命名为异叶梁王茶甙Ⅳ。这两种皂甙均系首次从植物中分出的新化合物。
Following the previous report, two pentacyclic triterpenoid saponins were isolated from the bark of Nothopanax davidii (France) Harms. Analysis by chemical and spectroscopic (IR, ~1HNMR, ~(13)CHMR, ~1H-~1HCOSY, ~(13)C-~1H COSY, MS), respectively identified as 3-O-α-(2’, 4 ’-O-Diacetyl)-L-arabinose-3β-hydroxyolean-12-ene-28,29-dicarboxylic acid-28-O-[α-L-rhampyritol ( 1-4)-β-D-glucopyranose (1-6)-β-D-glucopyranose] ester 甙 (III), named 异Jieliangwangcha甙 III and 3-O-β-(2) -O-Acetyl)-D-xyloxylo-3β-hydroxyolean-12-ene-28,29-dicarboxylic acid hydrazine (IV), named Heterophyllum variegata IV. Both of these saponins are new compounds that were first isolated from plants.