AbstractAn improved method of isolation of betulin and lupeol from birch bark is developed and reported. The method afforded triterpenes with purity of 98.2% (betulin) and 96.3% (lupeol), respectively. Chromyl chloride was also investigated as an oxidating agent of O-acetylated betulin and lupeol. The transformation of isopropenyl moiety to aldehyde group was observed. Graphical abstract
摘要开发并报道了一种从桦树皮中分离
桦木醇和
羽扇豆酚的改进方法。该方法提供的三
萜类化合物的纯度分别为98.2%(贝特林)和96.3%(卢比欧尔)。还研究了
氯酰
氯作为O-乙酰化的桦木素和
羽扇豆酚的氧化剂。观察到异
丙烯基部分向醛基的转化。 图形概要