(2'R)-9-[2-(1H-indol-3-yl)-1-methoxycarbonyl-ethylcarbamoyl]-1,5-dioxa-8-aza-spiro[5.5]undecane-8-carboxylic acid benzyl ester 在
palladium 10% on activated carbon
氢气 作用下,
以
甲醇 为溶剂,
20.0 ℃
、101.33 kPa
条件下,
生成 (2R,9'S)-2-[(1,5-dioxa-8-aza-spiro[5.5]undecane-9-carbonyl)-amino]-3-(1H-indol-3-yl)-propionic acid methyl ester 、 (2R,9'R)-2-[(1,5-dioxa-8-aza-spiro[5.5]undecane-9-carbonyl)-amino]-3-(1H-indol-3-yl)-propionic acid methyl ester