new megastigmane glycoside, auricuomegastigmane I (7), were isolated from the seeds of Cassia auriculata, together with 11 known constituents. The chemical structures of seven new constituents were characterized on the basis of chemical and physicochemical evidence. In the present study, auricuosides I (1)–V (5) were obtained from the seeds of C. auriculata. To the best of our knowledge, there is no
of the ethanol extract of the root barks of Sambucus williamsii Hance collected in the Heilongjiang province of China resulted in the isolation of twonewiridoidglycosides, williamsoside A (1) and williamsoside B (2). Their structures were elucidated on the basis of extensive spectroscopic analysis (1D, 2D-NMR and HRESIMS) and chemical studies. Iridoidglycosides have for a long time been considered
对采集于中国黑龙江省的接骨木根皮的乙醇提取物进行化学研究,结果分离出两种新的环烯醚萜苷,威廉姆索苷 A (1) 和威廉姆索苷 B (2)。它们的结构是在广泛的光谱分析(1D、2D-NMR 和 HRESIMS)和化学研究的基础上阐明的。长期以来,环烯醚萜苷一直被认为是 S. williamsii 的特征成分。然而,在本研究中首次报道了 S. williamsii 中含有 apiofuranosyl 部分的环烯醚萜苷的存在。