A formal new access to the benzo[c]phenanthridine alkaloids, synthesis of nitidine and o-methyl fagaronine analogues.
作者:Yves L. Janin、Emile Bisagni
DOI:10.1016/s0040-4020(01)80559-7
日期:1993.1
reaction but omitting the acetic anhydride usually present in the reaction mixture. From these amines, through the thermal cyclization of their corresponding ethyl carbamates, a new access to the benzo[c]phenanthridin-6(5H)-ones was found. Preparation of water-soluble Nitidine and O-Methyl Fagaronine analogues bearing an alkylamino side chain on the C-6 position was achieved from these compounds.
Preparation and antileukemic activity of some alkoxybenzo[c]phenanthridinium salts and corresponding dihydro derivatives
作者:Robert K. Y. Zee-Cheng、C. C. Cheng
DOI:10.1021/jm00235a015
日期:1975.1
Salts of 2,3,8,9-tetrasubstituted alkoxy-, hydroxy-, and acetoxybenzo(c)phenanthridines as well as the corresponding 6-methoxy-5,6-dihydrobenzo(c)phenanthridines were prepared from appropriate chalcones through the tetralone and the 4b,10b,11,12-tetrahydrobenzo(c)phenanthridine intermediates. Complete O-demethylation of the tetramethoxybenzophenanthridine was achieved by fusion with pyridine hydrochloride