滇南红厚壳的化学成分

Chemical Constituents of Calophyllum polyanthum

从滇南红厚壳 (CalophyllumpolyanthumWall.etChoisy)的果实乙醇提取物中分离得到 2个新化合物———滇南红厚壳内酯A (calopolyanolideA ,1 ) ,滇南红厚壳内酯B (calopolyanolideB,2 )以及 3个已知化合物calanolideE2 (3) ,voleneol(4)和没食子酸 (gallicacid,5)。经波谱学鉴定 2个新化合物的结构分别为 :6 ,6 -二甲基 - 1 2a- (2α,3α-H) - 1 2a - (2 -甲基 - 3-羟基丁酰基 ) - 8b -羟基 - 4 -苯基 -吡喃并 -二氢香豆素 ;6 ,6 -二甲基 - 1 2a - (2α,3β-H) - 1 2a - (2 -甲基 - 3 -羟基丁酰基 ) - 8b -羟基 - 4 -苯基 -吡喃并

Chemical investigation on the seeds of Calophyllum polyanthum Wall. et Choisy (Gutifferae) led to the isolation of two new dihydrocoumarins named calopolyanolide A (1) and B (2) together with known compounds,calanolide E2 (3), voleneol (4) and gallic acid (5). The structures of calopolyanolide A(1) and B (2) are elucidated as 6,6-dimethyl-12a-(2α, 3α-H)-12a-(2-methyl-3-hydroxybutanoyl)-8b-hydroxy-4-phenyl-pyranodihydrocoumarin (1) and 6,6-Dimethyl-12a-(2α, 3β-H)-12a-(2-methyl-3-hydroxybutanoyl)-8b-hydroxy-4-phenyl-pyranodihydrocoumarin (2) based on their spectroscopic analyses.