R. E. Koehler

Chemistry of cephalosporin antibiotics. XIX. Transformation of .DELTA.2-cephem to .DELTA.3-cephem by oxidation-reduction at sulfur

Gary V. Kaiser, R. D. G. Cooper, R. E. Koehler et al. · The Journal of Organic Chemistry · 1970 · 74 citations

Natural Sciences, Biochemistry, Chemistry +8

Synthesis of l,2-dihydro-3<i>H</i>-pyrrolo[1,2-<i>a</i>]pyrrole-1-carboxylic acids and homologous pyridine and azepine analogues thereof

Humberto Carpio, E. GALEAZZI, Robert Greenhouse et al. · Canadian Journal of Chemistry · 1982 · 58 citations · Full text

Natural Sciences, Chemistry, Medicinal Chemistry +14

Chemistry of cephlosporin antibiotics. XVIII. Synthesis of 7-acyl-3-methyl-2-cephem-4-carboxylic acid esters

C. F. Murphy, R. E. Koehler · The Journal of Organic Chemistry · 1970 · 22 citations

Natural Sciences, Chemistry, Medicinal Chemistry +6

Chemistry of cephalosporin antibiotics. 22. Chemistry and biological activity of 3-alkoxymethyl cephalosporins

J. A. WEBBER, G. W. HUFFMAN, R. E. Koehler et al. · Journal of Medicinal Chemistry · 1971 · 19 citations

Medicine, Medicinal Chemistry, Pharmacology +8

A stereoselective oxidative cyclization of d-mandelamido-3-carbamoyloxymethyl-3-cephem-4-carboxylic ester

G. A. KOPPEL, R. E. Koehler · Tetrahedron Letters · 1973 · 11 citations

Natural Sciences, Chemistry, Medicinal Chemistry +5