摘 要 ：自心不甘(Tupistra aurantiaca Wall et Backer)根的醋酸乙酯萃取物经硅胶柱层析分离除可得到1β、2β、3β、4β、5β、7α-hexahydroxyspirost-25(27)-en-6-one外,还得到7个游离的甾体皂甙A-G,其中A及B分别为3-epiruscogenin及3-epi-neoruscogenin,Fo为Δ25(27)-pentrogenin(6)、C、D和E系新化合物经IR、MS、1H NMR及13C NMR谱鉴定分别推定为ranmogenin A(3)、B(4)和C(5)(兰茂甙元甲乙丙)。
Abstract:Seven free spirostane sapogenins (A-G) and 1β,2β,3β,4β,5β,7α-hexahydroxyspirost-25(27)-en-6-one were isolated by column chromatography from the acetyl acetate extract of the root of Tupistra aurantiaca Wall et Backer. Two of the them were identified as 3-epiruscogenin(1) and 3-epi-neorus -cogenin (2) respectively. Compound C,D and E are new compound,they were nmaed as ranmogenin A,B and C. Their structures have suggested as (3),(4) and (5) respectively,based on analyses using IR,MS,1H NMR 13 C NMR.