VERFAHREN ZUR HERSTELLUNG VON SUBSTANZ GM-95

摘要

A method of manufacturing substance GM-95 having general formula ÄIÜ, comprising (a) deprotect ing a macrocyclic compound having general formula ÄIIÜ (wherein, R<1>'s are the same or different and each represents a lower alkyl group, and R<2> represents a thiol protecting group) by removing acetal protecting groups (the R<1'>s) thereof, and forming an oxazole ring through an intramolecular cyclization reaction between produced formyl group and an amide group, and (b) deprotecting a resulting macrocyclic compound having general formula ÄIIIÜ (wherein, R<2> is as mentioned above) by removing the thiol protecting group (R<2>) thereof, and forming a thiazoline ring through an intramolecular cyclization reaction between a thiol group thus produced and an amide group.