Patent NZ-272674-A (NZ)
Title: 6-(2-oxooxazolidin-3-yl)-benzoxazole and -thiazole derivatives
Inventor: HABICH DIETER
IPC: C07D263/58
Filed: 1995-07-28
Abstract: Benzoxazolyl and benzothiazolyloxazolidinone derivs. of formula (I) and their salts are new. A = O or S(O)a; a = 0-2; R<1> = azido or OSO2R<3> or NR<4>R<5>; R<2> = H, formyl, carboxy, opt. branched ≤ 6C alkoxy-carbonyl; or is alkenyl or alkenyl of ≤ 8C (which are opt. substd. by OH, halo, or by alkoxy, acyl, alkylthio or alkoxycarbonyl each of ≤ 6C or phenyl which in turn may be substd by halo), 6-10C aryl (opt. substd. with carboxy, halogen, CN, formyl, CF3, NO2, 1-6C alkoxy, 1-6C alkoxycarbonyl, 1-6C alkylthio, 1-6C acyl or 1-6C alkyl), or is NR<20>R<21>, OR<22>, S(O)cR<23>, morpholino or a gp. of formula (a)-(h). R<3> = 1-4C alkyl or Ph (opt. substd. with 1-4C alkyl); R<4> and R<5> = each 3-6C cycloalkyl, H, Ph, 1-8C alkyl or an amino protecting gp; or R<4> or R<5> = COR<6>; R<6> = 3-6C cycloalkyl, 1-8C alkyl, 1-8C alkoxy, Ph or H; G, L and M = each H, COOH, halogen, CN, formyl, CF3, NO2, 1-6C alkoxy, 1-6C alkoxy-carbonyl, 1-6C alkylthio, 1-6C acyl, 1-6C alkyl (this last opt. substd. with OH , 1-5C alkoxy, 1-5C acyl or NR<7>R<8>), NR<7>'R<8>', 2-8C alkyl phenyl, Ph or a 5-6 membered opt. satd. heterocycle contg. up to 3 heteroatoms chosen from S, N and/or O and opt. itself substd. with CONR<9>R<10>, NR<11>R<12>, NR<13>SO2R<14>, R<15>R<16>N-SO2 or R<17>S(O)b; and/or G, L and M are opt. mono- or di- substd. with carboxy, halogen, CN, formly, CF3, NO2 Ph 1-6C alkoxy, 1-6C alkoxycarbonyl, 1-6C alkylthio, 1-6C acyl, 1-6C alkyl (this last itself opt. substd. with OH, 1-5C alkoxy, 1-5C acyl or NR<18>R<19>); R<7> and R<8> = each H, 1-4C alkyl or Ph or together with the N to which they are attached form a 5-6 membered satd. heterocycle contg. a further heteroatom chosen from N, S and/or O and opt. substd. on one of the further N with 1-3C alkyl or acyl and/or R<7> and R<8> = NR<7>'R<8>', R<7>' and R<8>' = as defined for R<7> and R<8>. b = 0-2; R<9>, R<10>, R<13>, R<15> and R<16> = each H, 1-6C alkyl or Ph; R<11>, R<1>2, R<18> and R<19> = each as defined for R<7> and R<8>; R<14> and R<17> = each as defined for R<3>; R<20> = 3-6C cycloalkyl, Ph, 1-6C acyl, 1-8C alkyl (opt. substd. with OH, alkoxy or OH-substd. 1-6C alkoxy, a 5-6 membered aromatic heterocycle contg up to 3 heteroatoms chosen from S, N and/or O or with Ph (itself opt. substd. with OH, CF3, halogen, NO2 or 1-4C alkyl) or alkyl opt. substd. with NR<24>R<25> or a gp. of formula (i)) R<20> = a gp of formula (j) R<26> = OH, 1-4C alkoxy or NR<28>R<29> R<28> and R<29> = each H, 1-5C alkyl, 3-6C cycloalkyl or Ph; R<27> = H 1-7C alkyl (opt. substd. with indolyl, OH, SH, imidazolyl, methylthio, amino, Ph, OH-substd. Ph, CONH2 CO2H or C(NH2)=NH; d = 0-6; T = O, CH2 or NR<30>; R<30> = H, Ph, 1-6C alkyl (opt. substd. with OH); R<21> = as defined for R<20> or H; R<22> = 1-8C alkyl (opt. substd. with 1-6C alkoxy or OH- or 1-6C alkoxy-substd. 1-6C alkoxy, 3-6C cycloalkyl or a 6-membered aromatic, opt. benzo condensed heterocycle contg. up to 4 N whichis itself opt. mono- or di-substd. with NO2, CF3, halogen, CN, OH, 1-5C alkyl, 1-5C alkoxy or 1-5C acyl; R<22> = a gp of formula (l), Ph or pyridyl; e = as defined for (d) W = as defined for T; C = 0-2; R<23> = 1-16C alkyl or alkenyl (opt. substd. with 1-6C alkoxycarbonyl, Ph or a 5-7 membered aromatic heterocycle contg 1-3 heteroatoms chosen from S, N and O) or 6-10C aryl or 1 5-7 membered aromatic heterocycle contg 1-3 heteroatoms chosen from S, N and O (these cycles being opt. mono or di-substd. with carboxy, halogen, CN, formyl, CF3, NO2, 1-6C alkoxy, 1-6C alkoxy-carbonyl, 1-6C alkylthio, 1-6C acyl or 1-6C alkyl); R<31> and R<32> = as defined for R<24> and R<25>; R<33> and R<34> together form O or R<33> and R<34> = each H, OH or 1-6C alkyl / opt. substd. with NR<41>R<42>; f = 0-1; g = 0-6; R<35> = 6-10C acyl or a 5-6 membered aromatic opt. benzo-condensed heterocycle contg. up to 3 heteroatoms chosen from S, N and O (all ring system being opt. mono-, di- or tri-substd. with NO2, CN, OH, Ph, halogen, CF3, 1-5C alkyl, 1-5C alkoxy or 1-5C acetyl (sic)) or morpholino, OH, 1-6C alkoxy, NR<43>R<44>, COR<45> or a gp. of formula (l); R<43> and R<44> = each as defined for R<24> and R<25>; R<45> = morpholino, OH or 1-6C alkoxy; R<36> and R<37> = each H, Ph, 1-6C alkyl or benzyl; R<38>, R<39> and R<40> = as defined for R<30>; l = 1-2.