Saccharide intermediates in the formation of the calicheamicin and esperamicin oligosaccharides

摘要

Intermediates useful in preparing the calicheamicin and esperamicin oligosaccharides, and particularly the sulfur- and O- substituted hydroxylamine-containing B ring of both oligosaccharides, are disclosed as are methods of making and using the same, including the preparation of chimeric antibiotics using the same.