Two new triterpenoid saponins, ardipusillosides IV and V (1 and 2, resp.), together with one known saponin, ardisiacrispin B(3), were isolated from the whole plants of Ardisia pusilla A. DC. Their structures were deduced by extensive spectral analysis and chemical evidences. Compound 1 contains a glycosylated glycerol residue which is a very rare structural feature among triterpenoid glycosides and
从Ardisia pusilla A. DC的整个植物中分离出两种新的三萜皂苷,ardipusillosides IV和V(分别为1和2),以及一种已知的皂苷,ardisiacrispin B(3)。通过广泛的光谱分析和化学证据推导了它们的结构。化合物1含有糖基化的甘油残基,其在三萜类糖苷中是非常罕见的结构特征,并且迄今为止仅在Ardisia属中发现。所有的皂苷对人胶质母细胞瘤U251MG细胞均表现出明显的细胞毒性,但不影响原代培养的人星形胶质细胞的生长。