Abstract:

As a monotype genus belonging to Anthericaceae in Dahlgren's system (1985) and endemic in the southwest of China, Diuranthera has been taxnomically discussed. It is known that Diuranthera is morphologically close to Chlorophytum with more than 200 species. From the chemotaxonomic point of view, the chemical studies of D. major and C. malayense have been undertaken. Four new steroidal saponins, chloromalosides A-D, were isolated from C. malayense, and three new steroidal saponins, diuranthosides A-C, were obtained together with chloromaloside A (Figure 2). These saponins show very close resemblance in structure rela-tionship. Chloromaloside A as the major saponin exists in both of them. Moreover, the chemi-cal constituents of C. chinense and C. nepalense were detected on HPTLC by comparing with C. malayense and D. major (Figure 3).

Key words: Diuranthera, Chlorophytum, Anthericaceae, Steroidal saponin, Chemotaxonomy

摘要：

以甾体皂甙为特征化学成分，结合形态演化、地理分布以及细胞学证据，探讨了鹭鸶兰属（Diuranthera）的分类、起源和进化问题。认为这一个特产于中国西南部的单型属作为中国一喜马拉雅植物区系的一个组成成分，显然是由产于喜马拉雅山东南隅亚热带林中的吊兰属（Chlrophytum)植物在向东延伸过程中，逐渐适应于较高海拔和较干燥气候的自然条件而演化形成的。

关键词: 鹭鸶兰属, 吊兰属, Anthericaceae科, 甾体皂甙, 化学分类