A new eremophilane acid was isolated in the phytochemical investigation of the roots of Ligularia. sagitta. Its structure and stereochemistry were elucidated by ID NMR and 2D NMR techniques including H-1-H-1 COSY, C-1...A new eremophilane acid was isolated in the phytochemical investigation of the roots of Ligularia. sagitta. Its structure and stereochemistry were elucidated by ID NMR and 2D NMR techniques including H-1-H-1 COSY, C-13-H-1 COSY, C-13-H-1 COLOC and NOESY.展开更多
Two minor steroidal saponins were isolated from the roots of Smilax menispermoidea.One of them is new and its structure was established as(25S) spirost-5-en-3β,17α,27-triol-3-O-[α-L-rhamnopyranosyl(1-4)]-β-D-gluco...Two minor steroidal saponins were isolated from the roots of Smilax menispermoidea.One of them is new and its structure was established as(25S) spirost-5-en-3β,17α,27-triol-3-O-[α-L-rhamnopyranosyl(1-4)]-β-D-gluco- pyranoside using spectroscopic and chemical methods.展开更多
文摘A new eremophilane acid was isolated in the phytochemical investigation of the roots of Ligularia. sagitta. Its structure and stereochemistry were elucidated by ID NMR and 2D NMR techniques including H-1-H-1 COSY, C-13-H-1 COSY, C-13-H-1 COLOC and NOESY.
基金Project supported by the National Natural Scicnce Foundation of Chinathe grant for doctoral program from State Education Commission of China
文摘Two minor steroidal saponins were isolated from the roots of Smilax menispermoidea.One of them is new and its structure was established as(25S) spirost-5-en-3β,17α,27-triol-3-O-[α-L-rhamnopyranosyl(1-4)]-β-D-gluco- pyranoside using spectroscopic and chemical methods.
