(1R,2R)-2-[(R)-1-(4-Methoxy-benzyl)-2,5-dioxo-4-(9H-xanthen-9-ylmethyl)-imidazolidin-4-yl]-cyclopropanecarboxylic acid 4-methoxy-benzyl ester 在
barium dihydroxide 作用下,
反应 24.0h,
以43%的产率得到(1R,2R)-2-[(R)-1-Amino-1-carboxy-2-(9H-xanthen-9-yl)-ethyl]-cyclopropanecarboxylic acid