重氮甲烷 、
(4α,7β)-3-(2-butynyloxy)-7-<(phenoxyacetyl)amino>-2-cephem-4-carboxylic acid (4-nitrophenyl)methyl ester 生成 (2β,7β)-3-methoxy-2-(1-methyl-1,2-propadienyl)-7-<(phenoxyacetyl)amino>-3-cephem-4-carboxylic acid (4-nitrophenyl)methyl ester 、 (2β,7β)-3-methoxy-2-(1-methyl-1,2-propadienyl)-7-<(phenoxyacetyl)amino>-3-cephem-4-carboxylic acid (4-nitrophenyl)methyl ester