AHU-377 INTERMEDIATES AND METHOD FOR PREPARING AHU-377 AND AHU-377 INTERMEDIATES

摘要

Disclosed are AHU-377 intermediates and a method for preparing AHU-377 and AHU-377 intermediates. The above-mentioned method for preparing AHU-377 uses a chiral glycidyl benzyl ether as the starting raw material. Intermediate compound (3) is produced by an addition reaction with a biphenyl Grignard reagent and a Mitsunobu reaction with a succimide or a phthalimide. Intermediate compound (4) is obtained after the benzyl protection has been removed. Intermediate compound (4) is oxidised to form an aldehyde, and then is reacted with a phosphorus ylide reagent to obtain target intermediate compound (8). Intermediate (9) is obtained under a selective catalytic hydrogenation condition. Target compound (10), i.e. AHU-377, is obtained by the hydrolysis of the single amide bond. The use of an expensive non-natural amino acid raw material tyrosine can be avoided in the method of the present application, and the method has a convenient operation and high safety.