(3S,4S)-6-acetyl-4-[(3-chloro-4-fluorobenzene)amido]-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-3-yl 2-{[(tert-butoxy)carbonyl](propyl)amino}acetate 在
盐酸 作用下,
以
1,4-二氧六环 、
二氯甲烷 为溶剂,
以261 mg的产率得到(3S,4S)-6-acetyl-4-[(3-chloro-4-fluorobenzene)amido]-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-3-yl 2-(propylamino)acetate hydrochloride