4-Amino-7-(5-deoxy-beta-D-ribofuranosyl)-5-iodo-7H-pyrrolo[2,3-d

4-bromo-4'-demethylepipodophyllotoxin derivatives

4-Carbamoylimidazolium-5-olate derivatives

4-demethoxy-4-amino-anthracyclines

4-demethoxy-4-amino-anthracyclines

4-demethoxy-4-amino-anthracyclines

4-Deoxy-4-substituted amino derivatives of oleandomycin

4-desmethyl nucleoside analogs and oligomers thereof

4-ethoxy-5-fluoro-2'-deoxyuridine

4-N, 2'-N and 4,2'-Di-N-fortimicin AL derivatives

4-N-Acylfortimicin B-1,5-carbamates

4-N-substituted sialic acids and their sialosides

4.sup.G -alpha-D-glucopyranosyl rutin, and its preparation and u

48 kD cellular phosphoprotein CtBP

4aR,8aS,9R-5,6-Permissibly substituted-9-hydroxy-octahydro-1H(an