An efficient synthesis of C-11 substituted 6H-pyrido[4,3-b]carbazoles
作者:Sandeep P. Modi、Meged A. Michael、Sydney Archer、James J. Carey
DOI:10.1016/s0040-4020(01)82308-5
日期:1991.8
treated with one equivalent of MeLi followed by quenching of the reaction mixture with water to give the lactone 19 Compound 19 was treated with a number of organolithium reagents such as methyllithium. n-butyllithium, ethoxyvinyl lithium and the lithio derivative of formaldehyde diethyl mercaptal to give, after sodium borohydride reduction, 1, 15, 30, and 31 respectively. Compounds 30 and 31 were hydrolyzed