A practical semi-synthesis of tautomycin using a hydrolysate of natural tautomycin

A useful and brief semi-synthesis of tautomycin, which can be supplied a large quantity, has been achieved through the coupling reaction of the C21–C26 segment (an epoxide) with the C1–C20 segment (a dithiane), which was derived from the degradation of natural tautomycin, toward the conformational analysis of the C21–C26 moiety and the exploration of structure–activity relationships.