Conjugate Addition of Phenols to 2-Nitrogalactal − Synthesis of O-(2-Acetamido-2-deoxygalactosyl)tyrosine
作者:Ahmed I. Khodair、Gottfried A. Winterfeld、Richard R. Schmidt
DOI:10.1002/ejoc.200200712
日期:2003.5
2-Nitrogalactal derivative 1 afforded 2-deoxy-2-nitrogalactopyranosides on treatment with phenol and substituted derivatives under base catalysis. Transformation of the nitro group into the amino and the acetamido groups and O-deprotection could readily be performed, thus providing aryl 2-acetamido-2-deoxygalactopyranosides 5 and 6 in high yields and with good stereoselectivities. The same reaction