Synthesis of a trisaccharide related to the antitumour antibiotic, aclacinomycin A
Abstract
Trisaccharide (14), closely related to the trisaccharide moiety of aclacinomycin A has been synthesized stereoselectively by coupling (3) and (5) under Koenigs–Knorr conditions and then (7) and (9) in the presence of N-iodosuccinimide.