Oxidation and alkylation of spectinomycin derivatives: synthesis of trospectomycin from spectinomycin
摘要:
Trospectomycin can be prepared in five steps from spectinomycin. The overall yield of the process is 13.3%. The synthesis involves a new oxidation of silyl enol ether 4 to enone 5 by use of an alkyl hydroperoxide. This reaction is mild and very selective, giving excellent yields. The synthesis also involves a gamma-alkylation of enone 5 activated by a beta-oxygen. This alkylation is unusual in that no alkylation is seen at the a (4') carbon.
Oxidation and alkylation of spectinomycin derivatives: synthesis of trospectomycin from spectinomycin
摘要:
Trospectomycin can be prepared in five steps from spectinomycin. The overall yield of the process is 13.3%. The synthesis involves a new oxidation of silyl enol ether 4 to enone 5 by use of an alkyl hydroperoxide. This reaction is mild and very selective, giving excellent yields. The synthesis also involves a gamma-alkylation of enone 5 activated by a beta-oxygen. This alkylation is unusual in that no alkylation is seen at the a (4') carbon.