Author/Authors :
Zeng، نويسنده , , Yibin and Yang، نويسنده , , Jie and Qiu، نويسنده , , Zhuibai and Cheng، نويسنده , , Jian and Hu، نويسنده , , Chunhua and Zhen، نويسنده , , Peiju، نويسنده ,
Abstract :
A new rearrangement byproduct, 3-methyl-1,2,3,4,4a,4b,9a,15,15a,15b-decahydro-(4,5);(4a,15)-dimethanotricyclo(4,3,1,02,7)deca[8,9,1,10-a,b,c]pyrido[4,3-a]-acridin-6-en-9-ol-8-one, has been isolated from the acid-catalyzed O-demethylation of 7α-o-aminophenyl-6,14-endo-ethenotetrahydrothebaine. The mechanism of its formation involving a novel annulation of the 6,14-endo-ethenylene moiety with the A ring aromatic carbons is discussed.
