3, 6-Dihydro-2-Oxo-6H-1,3,4,-Thiadiazine Derivatives

Compounds of the formula I

• in which
• R1 denotes H, A, Hal, OH, OA, SH, SA, SOA, SO2A, NO2, NH2, NHA, NAA′, SO2NH2, SO2NHA, SO2NAA′, CONH2, CONHA, CONAA′, NACOA′, NASO2A′, COOH, COOA or CN,
• R2 denotes H, A, Hal, SO2NH2, SO2NHA, SO2NAA′, CONH2, CONHA, CONAA′, NACOA′, NASO2A′, COOH, COOA or CN,
• R1 and R2 together also denote methylenedioxy,
• B is absent, denotes NHCOCONH(CH2)nR3, NHCOCONA(CH2)nR3, NHCOCOO(CH2)nR3, OCONH(CH2)nR3, OCONA(CH2)nR3, NHCONH(CH2)nR3, NACONH(CH2)nR3, N(CH2)nR3, CONH(CH2)nR3, SO2NH(CH2)nR3, SO2NA(CH2)nR3, NHSO2(CH2)nR3 or NASO2(CH2)nR3,
• Q is absent or denotes alkylene having 1-4 C atoms,
• R3 denotes R1, Het or
• alkyl having 1-6 C atoms or cycloalkyl having 3-8 C atoms, each of which is unsubstituted or mono-, di-, tri- or tetrasubstituted by R4,
• R4 denotes A, Hal, OH, OA, SH, SA, SOA, SO2A, NO2, NH2, NHA, NAA′, SO2NH2, SO2NHA, SO2NAA′, CONH2, CONHA, CONAA′, NACOA′, NASO2A′, COOH, COOA or CN,
• Het denotes a mono- or bicyclic saturated heterocycle having 1 to 4 N, O and/or S atoms, which may be unsubstituted or mono-, di- or trisubstituted by R4, CHO, COA, ═S, ═NH, ═NA and/or ═O (carbonyl oxygen),
• A, A′ each, independently of one another, denote unbranched or branched alkyl having 1-10 C atoms,
• in which 1-7H atoms may be replaced by F, Cl and/or Br, cycloalkyl having 3-8 C atoms or cycloalkylalkylene having 4-10 C atoms,
• Hal denotes F, Cl, Br or I,
• n denotes 0, 1, 2 or 3,
• and pharmaceutically usable derivatives, solvates, salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.