New cyanomorpholinyl byproduct of doxorubicin reductive alkylation
作者:Edward M. Acton、George L. Tong、Dorris L. Taylor、Joyce A. Filppi、Richard L. Wolgemuth
DOI:10.1021/jm00157a019
日期:1986.7
we reported that reductivealkylation of doxorubicin with 2,2'-oxybis[acetaldehyde] and NaBH3CN to form the 4''-morpholinyl derivative also gave the intensely potent 3''-cyano-4''-morpholinyl as a byproduct, by addition of CN- to an iminium intermediate in place of hydride. We now find that sugar 4'-OH is a third nucleophile that can add to the iminium intermediate in this reaction. Bridging of the