olean-12-en-1-one. Several methods have been developed to change the 1-oxo into a 3-oxo-function and vice versa. Since olean-12-en-3-one has already been reduced to β-amyrin and olean-13(18)-ene has been synthesised, our work constitutes a synthesis of β-amyrin.
Castanopsone and castanopsol two new triterpenoids from Castanopsis indica
作者:Pushpa Pant、R.P. Rastogi
DOI:10.1016/0031-9422(71)85090-2
日期:1977.1
The isolation of two coumarins and five triterpenoidsfromCastanopsisindica is described. These have not been reported from this genus previously. The structures of two of the three newtriterpenoids have been elucidated by chemical reactions and physical methods.