Broadspectrum 2-(substituted-amino)-benzoxazole sulfonamide HIV protease inhibitors

1 8 1-62-63-7121 11a11b10a10b92 1-681-681-622823 1-63-73-71-41-44 1-41-43-72-62-61-61-621-61-61-625 1-611-621-61-66 1-611221-61-66 1-611-411-421-421-41-41-41-46 6 1-65 6 1 2The present invention concerns the compounds having the formula N-oxides, salts, stereoisomeric forms, racemic mixtures, prodrugs, esters and metabolites thereof, wherein Rand Reach are H, optionally substituted Calkyl, Calkenyl, Ccycloalkyl, aryl, Het, Het; Rmay also be a radical of formula (RR)NC(RR)CR-; t is 0, 1 or 2; Ris H or Calkyl; L is -C(═O)-, -O-C(═O)-, -NR-C(═O)-, -O-Calkanediyl-C(═O)-, -NR-Calkanediyl-C(═O)-, -S(═O)-, -O-S(═O)-, -NR-S(═O); Ris Calkyl, aryl, Ccycloalkyl, CcycloalkylCalkyl, or arylCalkyl; Ris H, CalkylOC(═O), carboxyl, aminoC(═O), mono- or di(Calkyl)aminoC(═O), Ccycloalkyl, Calkenyl, Calkynyl or optionally substituted Calkyl; A is Calkanediyl, -C(═O)-, -C(═S)-, -S(═O)-, Calkanediyl-C(═O)-, Calkanediyl-C(═S)- or Calkanediyl-S(═O)-; Ris H, OH, Calkyl, HetCalkyl, HetCalkyl, optionally substituted aminoCalkyl; Ris CalkylO, Het, HetO, Het, HetO, aryl, arylO, Calkyloxycarbonylamino or amino; and in case -A- is other than Calkanediyl then Rmay also be Calkyl, HetCalkyl, HetOCalkyl, HetCalkyl, HetOCalkyl, arylCalkyl, arylOCalkyl or aminoCalkyl; whereby each of the amino groups in the definition of Rmay optionally be substituted; -A-Ris hydroxyCalkyl; Rand -A-Rtaken together with the nitrogen atom to which they are attached may also form Hetor Het. It further relates to their use as broadspectrum HIV protease inhibitors, processes for their preparation as well as pharmaceutical compositions and diagnostic kits comprising them. It also concerns combinations thereof with another anti-retroviral agent, and to their use in assays as reference compounds or as reagents.