lithium methanolate 、 (6
R)-3-(1-methyl-1
H-tetrazol-5-ylsulfanylmethyl)-8-oxo-7
t-(4,4,4-trichloro-but-2-enoylamino)-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid trimethylsilanyl ester 生成
(6R)-7t-(4,4-dichloro-but-3-enoylamino)-7c-methoxy-3-(1-methyl-1H-tetrazol-5-ylsulfanylmethyl)-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid