Alkaloids from the Roots of Aristolochia Triangularis(I)

From the roots of Aristolochia triangularis, two new alkaloids triangularine A and triangularine B together with thirteen known alkaloids namely aristololactam AII, AIIIa, AIA, Ia, IIA, BII, CII, cepharadione A, 4,5 dioxodehydroasimilobine; aristolochic acid D (IVa), magnoflorine; N, N dimethyllindcarpine and oblongine were isolated, their structures were identified by means of spectral analysis and chemical conversion.

蒙桑枝化学成分的研究(Ⅰ)

自桑科桑属植物蒙桑(Morus monglica Schneid.)的干燥枝中分离得到10个化合物,经理化性质测定、标准品对照层析及光谱UV,IR,MS,~1H-NMR,^(13)C-NMR分析等方法,分别鉴定为β-香树脂醇乙酸酯(B-Amyrine acetate,1),齐墩果-12-烯-3β,28-二醇(Olean-12-ene-3β,28-diol,2),桦皮酸(Betulinic acid,3),β-谷甾醇(β-Sitosterol,4),胡萝卜甙(Daucosterine,5),伞形花内酯(Umbelliferon,6),桑素(Morusin,7),槲皮素(Quereetin,8),3-甲基瓣皮素(Quercetin-3-methyl ether,9)及丁香脂素-4,4′-O-β-D-二葡萄糖甙(Syringaresinol-4,4′-di-O-β-D-glucopyranoside,10)。其中化合物2,9,10为首次自该属中分离得到。

小叶黑柴胡中皂甙成分的研究

自小叶黑柴胡根中分得５个三萜皂甙和２个三萜皂甙元。根据理化性质和波谱分析，分别鉴定为柴胡皂甙ａ，柴胡皂甙ｄ，柴胡皂甙ｂ２，柴胡皂甙ｂ４，ｃｈｉｋｕｓａｉｋｏｓｉｄｅＩ和柴胡皂甙元Ｆ，柴胡皂甙元Ｇ，均为首次从该植物中分离得到。