豆甾醇可从 Leptadenia reticulata 中分得,据报导,含有甾醇类和催乳物质。本文重点对豆甾醇及维生素 E 的纯品,提供一种简便的分离方法,并与已发表的各种方法进行了对此。用10月份采集的植物茎和叶,取其研细的混合粉末500克以1000毫升的1N 乙醇制 KOH 回流6小时,除去上清液,沉淀用乙醇洗二次,回收75%乙醇后,析出物用200毫升石油醚(40～60°)分五次提取,提取液浓缩至50毫升,然后用醇洗至中性,慢慢蒸发至近干,并溶于200毫升甲醇,回流6小时,冷 Stigmasterol is obtained from Leptadenia reticulata and is reported to contain sterols and prolactin. This article focuses on the pure product of stigmasterol and vitamin E, providing an easy method of separation and has been done with a variety of published methods. The stems and leaves of the plants collected in October were taken from 500 g of the ground mixed powder and refluxed in 1000 ml of 1N ethanol for 6 hours. The supernatant was removed, the precipitate was washed twice with ethanol, 75% ethanol was recovered, and then precipitated The material was extracted five times with 200 ml of petroleum ether (40-60 °). The extract was concentrated to 50 ml and then neutralized with alcohol until it became nearly dry. The residue was dissolved in 200 ml of methanol and refluxed for 6 hours.