4β-1″-[(2″-substituted benzoyl)...
4β-amino podophyllotoxin congeners as potential...
4'-substituted leucomycins
4′-C-ethynyl purine nucleoside compounds
4′-C-ethynyl pyrimidine nucleosides and pharmaceutical...
4′-O-substituted tylosin analogs
4′-substituted nucleoside derivatives as inhibitors of...
4′-Substituted-4′,5′-dihydropsoralens and...
4″-substituted-9-deoxo-9a-aza-9a homoerythromycin a...
4' and 4', 4"-substituted-3-.alpha.-(diphenylmethoxy) tropane an
4'-Deschlororebeccamycin pharmaceutical composition and method o
4'-Methyl-.beta.-mercapto-.beta.,.beta.-cyclopentamethylenepropi
4'-substituted nucleosides
4(1H)-quinolone derivatives
4(2-indolyl)2-amino-pentanedioic acids and cholecyostokinin use
4(3)substituted-4(3)-aminomethyl-(thio)pyran or piperidine...
4(3,5-bis(1,1-dimethylethyl-4-hydroxyphenyl)-4-oxobutanamide com
4(3H)-oxo-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine derivatives
4(3H)-quinazolinone derivatives and pharmaceutical compositions
4(3H)-quinazolinone derivatives and pharmaceutical compositions