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. 1978 Jun;31(6):561-9.
doi: 10.7164/antibiotics.31.561.

Diastereomeric 7-ureidoacetyl cephalosporins. II. 7beta [[[(Aminocarbonyl) amino]-2-thienylacetyl] amino]-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl) thio] methyl]-8-oxo-5-thia-1-azabicyclo [4.2.0] oct-2-ene-2-carboxylic acid

H E Applegate, C M Cimarusti, J E Dolfini, W H Koster, M A Ondetti, W A Slusarchyk, M G Young, H Breuer, U D Treuner
Free article

Diastereomeric 7-ureidoacetyl cephalosporins. II. 7beta [[[(Aminocarbonyl) amino]-2-thienylacetyl] amino]-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl) thio] methyl]-8-oxo-5-thia-1-azabicyclo [4.2.0] oct-2-ene-2-carboxylic acid

H E Applegate et al. J Antibiot (Tokyo). 1978 Jun.
Free article

Abstract

The synthesis and antibacterial activity in vitro of 7-methoxylated cephalosporins having a thienylureidoacetyl or a thienylglycyl C-7 side-chain are described. Acylation of 7 beta-amino-7-methoxycephems with a novel 2-aminooxazolone hydrochloride under neutral conditions gave the thienylureidoacetyl derivatives in good yield with retention of configuration. 7 beta-[[D-[(Aminocarbonyl)amino]-2-thienylacetyl]amino]-7-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio] methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid sodium salt (SQ 14,359) was found to have a broad-spectrum of antibacterial activity in vitro, particularly against beta-lactamase-producing organisms.

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