甲醇 、 (2Ξ,6'
R)-3'-acetoxymethyl-5'
t,8'-dioxo-7'
t-(2-thiophen-2-yl-acetylamino)-(6'
rH)-5'λ
4-spiro[aziridine-2,4'-(5-thia-1-aza-bicyclo[4.2.0]oct-2-ene)]-2'-carboxylic acid 2,2,2-trichloro-ethyl ester 、
乙酰氯 生成
(6R)-3-acetoxymethyl-4ξ-(acetylamino-methyl)-4ξ-methoxy-5t,8-dioxo-7t-(2-thiophen-2-yl-acetylamino)-(6rH)-5λ4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 2,2,2-trichloro-ethyl ester