C-23-Modified derivatives of OMT, pharmaceutical compositions an
C-23-substituted mycaminosyltylonolide compounds, pharmaceutical
C-25 carbamate rifamycin derivatives with activity against...
C-3 phosphine oxide substituted carbacephalosporins
C-3 Substituted 1,4-benzodiazepines and pharmaceutical utilizati
C-3 Substituted cephalosporins
C-3′ protected monomeric nucleotides and synthesis of...
C-3' acylaminooxy-7-[(2-aminothiazol-4-yl)-.alpha.-(substituted-
C-3' thiadiazinyl cephalosporin analogs
C-3'acylsulfonamido cephalosporin analogs
C-3'thioiminosulfonyl cephalosporin analogs
C-31 desmethyl FR-900520 cyclic hemiketal immunosuppressant agen
C-31 methylated FR-900520 cyclic hemiketal immunosuppressant age
C-4 carbonate taxanes
C-4 specific sulfotransferase
C-4 substituted macrolide antibiotics
C-4 substituted retinoids
C-4" substituted macrolide antibiotics
C-4″-substituted macrolide derivatives
C-4″-substituted macrolide derivatives