The chemical investigation of Ixeris polycephala afforded two new norsesquiterpenes, named as ixerols A and B (1-2). Their structures were established based on spectroscopic methods including 2D NMR experiments. The...The chemical investigation of Ixeris polycephala afforded two new norsesquiterpenes, named as ixerols A and B (1-2). Their structures were established based on spectroscopic methods including 2D NMR experiments. The absolute structure of ixerol B was determined by its CD spectrum.展开更多
文摘The chemical investigation of Ixeris polycephala afforded two new norsesquiterpenes, named as ixerols A and B (1-2). Their structures were established based on spectroscopic methods including 2D NMR experiments. The absolute structure of ixerol B was determined by its CD spectrum.
基金supported by the National Natural Science Foundation of China (30725048)National Basic Research Program of China (2009CB522300)+1 种基金the Innovative Group Program from the Science and Technology Department of Yunnan Province (2008OC011)the Fund of State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany,Chinese Academy of Sciences~~