Braca Alessandra, Abdel-Razik Ayman F, Mendez Jeannette, De Tommasi Nunziatina
Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
J Nat Prod. 2006 Feb;69(2):240-6. doi: 10.1021/np050429+.
Thirteen new triterpenoid saponins (1-13) were isolated from the aerial parts of Campsiandra guayanensis. Their structures were elucidated by 1D and 2D NMR experiments including 1D-TOCSY, DQF-COSY, ROESY, HSQC, and HMBC spectroscopy, as well as ESIMS analysis. The aglycon moieties of 1-10 were assigned as oleanane derivatives and those of 11-13 as lupane derivatives.
从瓜亚纳坎普西亚德草（Campsiandra guayanensis）的地上部分分离出13种新的三萜皂苷（1-13）。通过一维和二维核磁共振实验（包括一维全相关谱、双量子滤波相关谱、旋转框架核Overhauser效应谱、异核单量子相干谱和异核多键相关谱）以及电喷雾离子化质谱分析确定了它们的结构。化合物1-10的苷元部分被确定为齐墩果烷衍生物，化合物11-13的苷元部分被确定为羽扇豆烷衍生物。
