A New Triterpenoid from Amoora dasyclada

编号 zgly0000345291

文献类型 期刊论文

文献题名 A New Triterpenoid from Amoora dasyclada

作者 WANGHuan  ZHANGXiao-Feng  YANGShu-Min  LUOXiao-Dong 

作者单位 NorthwestInstituteofPlateauBiology  StateKeyLaboratoryofPhytochemistryandPlantResourcesinWestChina 

母体文献 Acta Botanica Sinica;植物学报: 英文版 

年卷期 2004,46(10)

页码 1256-1260

年份 2004 

分类号 Q949.753.1  Q946 

关键词 三萜系化合物  楝科  植物  中国  云南  生物化学 

文摘内容 Five compounds were isolated from the EtOH extraction of the stem of Amoora dasyclada (How et T.Chen) C.Y.Wu (Meliaceae). On the basis of spectroscopic methods, their structures were elucidated as 24, 25-epoxy-tirucall-7-ene-3, 23-dione (1),24,25,26,27-tetranortirucall-7-ene-3-oxo-23(21)-Iactone (2),taraxerone (3),taraxerol (4)and β-sitosterol (5).Among them, compound 1 was a new triterpenoid, compounds 3-5 were firstly obtained from this plant; compound 2,an tetranortriterpenoid, was firstly isolated from natural sources, and its NMR data were assigned for the first time. Moreover, the △^7-bond and the Me-14 in compound 2 were never changed, which has never been found in other tetranortriterpenoids. And the biosynthetic pathway of tetranortriterpenoid was further discussed。