4-benzyloxyquinoline-2-carboxylic acid [1(S)-(3,4-dibenzyloxy-5-oxo-2,5-dihydrofuran-2(R)-yl)-2-bromoethyl] ester 在
palladium on activated charcoal
氢气 作用下,
以
甲醇 为溶剂,
以74%的产率得到4-hydroxyquinoline-2-carboxylic acid [(2R)-2-(3,4-dihydroxy-5-oxo-2,5-dihydrofuran-2-yl)-(1S)-2-bromo-ethyl] ester