3-(Substituted)carbonylamino cephem derivatives

Details 3-(Substituted)carbonylamino cephem derivatives 3-(Substituted)carbonylamino cephem derivatives

1974-12-04

1977-01-04

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424246, C07D50120, C07D50160

Patent

active

040012263

ABSTRACT:
7-Acylamino and 7-amino-3-(substituted)carbonylamino-3(or 2)-cephem-4-carboxylic acids and esters thereof, which are useful as antibiotics or as intermediates in preparing antibiotic substances respectively, are prepared from 7-acylamino-3-azidocarbonyl-2(or 3)-cephem-4-carboxylic acid esters via the corresponding thermally derived 3-isocyanatocephem derivatives.

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