Phytochemical investigation of the root barks of Periploca chrysantha D. S. Yao, X. C. Chen et J. W. Ren (Asclepiadaceae) led to the elucidation of four new spiroorthoester group-containing pregnane glycosides (1–4), named periplosides W-Y and 3-O-formyl-periploside F. Their structures were elucidated on the basis of extensive spectroscopic analysis. The four new pregnane glycosides (1–4) were found to exhibit significantly inhibitory activities against the proliferation of B and T lymphocytes and favorable selective index comparable to those of cyclosporin A.

中文翻译：

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含基孕甾苷螺环从的根皮杠黄花及其抑制活性对B和T淋巴细胞的增殖

的根皮的植物化学研究杠金花茶导致了四个新的含螺环孕甙（阐明DS姚，XC Chen等人JW（萝藦科）1 - 4名为periplosides WY和3-）Ø甲酰基periploside F.在广泛的光谱分析的基础上阐明了它们的结构。四个新孕甙（1 - 4）被发现对B和T淋巴细胞和有利的选择指数的增殖媲美环孢菌素A表现出显著抑制活性