Synthesis of cephalosporin-4-aldehydes

Synthesis of cephalosporin-4-aldehydes Synthesis and antibacterial activity of 2-oxocephalosporins Synthesis and antibacterial activity of 2-[(methoxycarbonyl)methylene]cephalosporins Synthetic studies on β-lactam antibiotics. Part 10. Synthesis of 7β-[2-carboxy-2-(4-hydroxyphenyl)acetamido]-7.alpha.-methoxy-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-1-oxa-1-dethia-3-cephem-4-carboxylic acid disodium salt (6059-S) and its related 1-oxacephems Orally absorbable cephalosporin antibiotics. 1. Structure-activity relationships of benzothienyl- and naphthylglycine derivatives of 7-aminodeacetoxycephalosporanic acid Design, synthesis and biological activities of some 7-aminocephalosporanic acid derivatives Synthesis and antibacterial activities of new (.alpha.-hydrazinobenzyl)cephalosporins Semisynthetic cephalosporins. Synthesis and structure-activity relations of analogs with 7-acyl groups derived from 2-(cyanomethylthio)acetic acid or 2-[(2,2,2-trifluoroethyl)thio]acetic acid and their sulfoxides and sulfones Semisynthetic cephalosporins. Synthesis and structure-activity relations of 7-sulfonylacetamido-3-cephem-4-carboxylic acids Orally active cephalosporins and penicillins