(2R,3R,4S,6S)-3-acetyloxy-4-[(1R)-1,2-diacetyloxyethyl]-7-(4-nitrophenyl)-10-phenyl-5-oxa-9-thia-7-aza-1-azoniatricyclo[6.3.0.02,6]undeca-1(8),10-dien-11-olate 、
硫代异氰酸苯酯 以
二氯甲烷 为溶剂,
以7%的产率得到(2R,3R,4S,6S)-3-acetyloxy-4-[(1R)-1,2-diacetyloxyethyl]-7-(4-nitrophenyl)-10-phenyl-5-oxa-9-thia-7-aza-1-azoniatricyclo[6.3.0.02,6]undeca-1(8),10-diene-11-thiolate