[Studies on the chemical constituents of the herba of Cuscuta chinensis].

The chemical constituents of the herb of Cuscuta chinensis Lam. were investigated. Five compounds were isolated from petroleum ether and chloroform fraction. Their structures were identified as beta-sitosterol, d-sesamin, 9(R)-hydroxy-d-sesamin, d-pinoresinol and daucosterol by chemical and spectroscopical methods. All these compounds were isolated from the stem for the first time.