Stephen R. Herchen

Cell-free conversion of δ-(<scp>l</scp>-α-aminoadipyl)-<scp>l</scp>-cysteinyl-<scp>d</scp>-valine into an antibiotic with the properties of isopenicillin N in <i>Cephalosporium acremonium</i>

Toshio Konomi, Stephen R. Herchen, Jack E. Baldwin et al. · Biochemical Journal · 1979 · 104 citations · Full text

Bioorganic Chemistry, Antimicrobial Chemotherapy, Chemical Biology +18

Cell-free ring expansion of penicillin N to deacetoxycephalosporin C by Cephalosporium acremonium CW-19 and its mutants.

Masao Yoshida, Toshio Konomi, Mutsutoshi Kohsaka et al. · Proceedings of the National Academy of Sciences · 1978 · 66 citations · Full text

Klebsiella Pneumoniae, Bacteriology, Molecular Biology +16

Regioselectivity of electrophilic aromatic substitution: syntheses of 6- and 7-sulfamoylindolines and -indoles

Alan L. Borror, Efthimios Chinoporos, Michael P. Filosa et al. · The Journal of Organic Chemistry · 1988 · 30 citations

Bioorganic Chemistry, Engineering, Electrophilic Aromatic Substitution +11

Synthesis of δ-(<scp>L</scp>-α-aminoadipoyl)-<scp>L</scp>-cysteinyl-<scp>D</scp>-valine and some carbon-13 and nitrogen-15 labelled isotopomers

Jack E. Baldwin, Stephen R. Herchen, Brian L. Johnson et al. · Journal of the Chemical Society Perkin Transactions 1 · 1981 · 29 citations

Benzyl-based Protective Groups, Derivative (Chemistry), Bioorganic Chemistry +14

Syntheses of penicillin N, [6 α-3H]penicillin N and [10-14C,6 α-3H]penicillin N

Jack E. Baldwin, Stephen R. Herchen, PUSHPA D. SINGH · Biochemical Journal · 1980 · 17 citations · Full text

Medicinal Chemistry, Alpha-p-nitrobenzyl-n-p-nitrobenzyloxycarbonyl-d-glutamic Acid, Bioorganic Chemistry +14