(13S,16S)-1-ethyl-7-fluoro-16-hydroxy-16-methanesulfonyloxymethyl-4-oxo-1,4,13,15,16,17-hexahydro-12H-11-oxa-1,14-diaza-cyclopenta[a]phenanthrene-3-carboxylic acid benzyl ester 、
(R)-3-(3-fluoro-4-hydroxy-phenyl)-5-(hydroxymethyl)-oxazolidin-2-one 在
potassium carbonate 作用下,
以
1,4-二氧六环 、
乙腈 为溶剂,
反应 30.0h,
以60%的产率得到(13S,16S)-1-ethyl-7-fluoro-16-[2-fluoro-4-((R)-5-hydroxymethyl-2-oxo-oxazolidin-3-yl)-phenoxymethyl]-16-hydroxy-4-oxo-1,4,13,15,16,17-hexahydro-12H-1-oxa-1,14-diaza-cyclopenta[a]phenanthrene-3-carboxylic acid benzyl ester