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从滇杠柳(Periploca forrestii)根茎中分得两个新强心甾内酯滇杠柳苷元A(periforgenin A)(1a)和滇杠柳苷Ⅰ(periforoside Ⅰ)(2a)它们具有罕见的变形C/D环甾体骨架,化学结构分别为3β,5β-二羟基-15(14→8)abeo-(8S)-14-酮-强心甾-20(22)-烯内酯和滇杠柳苷元A 3-O-β-D-葡葡吡喃糖基(1→4)-β-D-磁麻吡喃糖苷,结构鉴定采用光谱分析及化学方法,1a的结构还经X衍射予以证实。
Two new peritorgenin A (1a) and periforoside Ⅰ (2a) were isolated from the roots of Periploca forrestii (2a). They had rare deformation C / D ring steroid skeleton, the chemical structure of 3β, 5β-dihydroxy-15 (14 → 8) abeo- (8S) -14- keto-cardoxin-20 (22) A 3-O-β-D-glucopyranosyl (1 → 4) -β-D-pyranopyranoside was identified by spectral analysis and chemical methods. The structure of 1a was also confirmed by X-ray diffraction.