K. V. P. Rao, R. Dandala, Ananta Rani
Sep 27, 2006
Citations
1
Influential Citations
3
Citations
Journal
Arkivoc
Abstract
Abstract The synthesis of three contaminants of Cefdinir (1), formed during the preparation of Cefdinir bulk drug, is described. The products identified as (6R, 7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2hydroxyiminoacetamido]-8-oxo-3-vinyl-5-thia-1-azabicyclo [4.2.0] oct-2-ene-2-carboxylic acid5-oxide (2), (6R, 7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetamido]-8-oxo-3-vinyl5-thia-1-azabicyclo [4.2.0] oct-3-ene-2-carboxylicacid (3) and (6R, 7R)-7-[(Z)-2-(2aminothiazol-4-yl)-2-hydroxyiminoacetamido]-8-oxo-3-methyl-5-thia-1-azabicyclo [4.2.0] oct2-ene-2-carboxylic acid (4).