A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of flavones is reported.The racemate and meso compounds of each bitlavanone have been separated and their structures have been determ...A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of flavones is reported.The racemate and meso compounds of each bitlavanone have been separated and their structures have been determined on the basis of their spectral data.展开更多
A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of fla- vones is reported.The products,the racemate and meso biflavanones,have been separated and their structures have been determin...A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of fla- vones is reported.The products,the racemate and meso biflavanones,have been separated and their structures have been determined on the basis of their spectral data.The configuration of 3b has been determined by X-ray crystallography as well.展开更多
Chamaejasmine (1), isolated from Stellera chamaejasmae L by Prof. HUANG in 1979, is a new type of biflavonoids and has been elucidated as 3, 3"-binaringenin in structure. After that, six other chamaejasmine-type ...Chamaejasmine (1), isolated from Stellera chamaejasmae L by Prof. HUANG in 1979, is a new type of biflavonoids and has been elucidated as 3, 3"-binaringenin in structure. After that, six other chamaejasmine-type biflavanones have also been isolated from the same plant.展开更多
文摘A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of flavones is reported.The racemate and meso compounds of each bitlavanone have been separated and their structures have been determined on the basis of their spectral data.
文摘A new approach to the synthesis of 2,2″-biflavanones by the reductive dimerization of fla- vones is reported.The products,the racemate and meso biflavanones,have been separated and their structures have been determined on the basis of their spectral data.The configuration of 3b has been determined by X-ray crystallography as well.
文摘Chamaejasmine (1), isolated from Stellera chamaejasmae L by Prof. HUANG in 1979, is a new type of biflavonoids and has been elucidated as 3, 3"-binaringenin in structure. After that, six other chamaejasmine-type biflavanones have also been isolated from the same plant.
