A novel triterpene of protostane type alizexol A(1).the first compound of this class having a substituted tetraltydropyran ring.has been isolated from the rhizome of Alisma orientalis (Sam) Juzep.The structure was elu...A novel triterpene of protostane type alizexol A(1).the first compound of this class having a substituted tetraltydropyran ring.has been isolated from the rhizome of Alisma orientalis (Sam) Juzep.The structure was elucidated by spectral data.and the ring conformation was analyzed by NOESY experiment.展开更多
A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY a...A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY and H-1-C-13 long range COSY)展开更多
文摘A novel triterpene of protostane type alizexol A(1).the first compound of this class having a substituted tetraltydropyran ring.has been isolated from the rhizome of Alisma orientalis (Sam) Juzep.The structure was elucidated by spectral data.and the ring conformation was analyzed by NOESY experiment.
文摘A new alpha-pyrone derivative, epimedokoreanone A was isolated from the aerial parts of Epimedium koreanum Nakai. Its structure was determined by spectroscopic methods (IR, MS, H-1 NMR, C-13 NMR, DEPT, H-1-C-13 COSY and H-1-C-13 long range COSY)
