abstract |
(57) Abstract: A novel method for producing A-76202 and its analogous compounds having excellent α-glucosidase inhibitory activity and useful as anti-obesity agents, anti-diabetic agents, anti-tumor agents or anti-AIDS agents Aim to find. SOLUTION: embedded image In the process chart, R 1 , R 2 , R 3 , R 4 and R 5 are the same or different and each represents a hydroxyl-protecting group, and R 1a , R 2a , R 3a , R 3 4a and R 5a are the same or different and each represent a hydrogen atom or a hydroxyl-protecting group; M represents a monovalent metal cation; Represents a halogen atom. |