8-[(2S,4RS)-1-tert-butoxycarbonyl-4-(tert-butyl-dimethyl-silanyloxymethyl)-pyrrolidin-2-ylmethoxy]-1-cyclopropyl-6,7-difluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid benzyl ester 在
盐酸 作用下,
以
1,4-二氧六环 为溶剂,
反应 4.0h,
以49%的产率得到8-[(2S,4RS)-1-tert-butoxycarbonyl-4-hydroxymethyl-pyrrolidin-2-ylmethoxy)-1-cyclopropyl-6,7-difluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid benzyl ester