title: Triterpenoids from Peganum nigellastrum.
abstract: Two triterpenoids were isolated from the roots of Peganum nigellastrum Bunge. Their structures were elucidated as 3alpha-acetoxy-27-trans-caffeoyloxyolean-12-en-28-oic acid methyl ester (1) and 3-oxotirucalla-7, 24-dien-21-oic acid (2) on the basis of spectroscopic evidence. 1 is a new triterpene ester and 2 is a known compound isolated for the first time from genus Peganum.
authors: Faculty of Pharmaceutical Sciences, Toho University, Funabashi, Chiba, Japan. zhongze_ma@hms.harvard.edu
authors: Zhong-Ze
authors: ZZ
authors: Ma
authors: Yoshio
authors: Y
authors: Hano
authors: Feng
authors: F
authors: Qiu
authors: Gang
authors: G
authors: Shao
authors: Ying-Jie
authors: YJ
authors: Chen
authors: Taro
authors: T
authors: Nomura
mesh_terms: D032443:Peganum / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D013057:Spectrum Analysis; D014315:Triterpenes / Q000302:isolation & purification*
chemical_list: D014315:Triterpenes