(1R,4R,5S)-1-[(S)-[(1S)-cyclohex-2-en-1-yl]-triethylsilyloxymethyl]-4-(2-hydroxyethyl)-5-methyl-6-oxa-2-azabicyclo[3.2.0]heptane-3,7-dione 在
吡啶 、
三苯基二氯化膦 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以17.1 mg的产率得到(1S,2R,5R)-2-(2-chloroethyl)-5-{(S)-[(S)-cyclohex-2-enyl](triethylsilyloxy)methyl}-1-methyl-7-oxa-4-aza-bicyclo[3.2.0]heptane-3,6-dione