Abstract: The invention provides compounds of formula (IA) and compounds of formula (IB) and pharmaceutically acceptable salts thereof; wherein A is selected from group (A1) and group (A2): wherein #1 is attached to the carbon atom forming the oxime moiety and wherein group (A1) is optionally substituted by one or two R10 and group (A2) is optionally substituted by one R10, and wherein R1, X, R2 and R10 are as defined in the claims, as well as methods of using the compounds to treat neoplastic diseases, in particular cancer.

Abstract: The present invention relates to compounds of formula I or pharmaceutically acceptable salt, solvate or hydrate thereof, wherein ASC is —N(R8)(R9)ASC-1 ASC-1 is Ring A represents a 4- to 6-membered saturated ring containing carbon atoms as ring members in addition to the nitrogen atom and wherein one CH2 moiety in ring A is optionally replaced by CH(R21) and wherein one carbon atom in ring A that is not adjacent to the nitrogen atom is optionally replaced by O, and wherein ring A is connected to X via a carbon atom; X represents a bond, —CH2- or —C(?O)—; AR1, AR2 represent independently phenyl or a 5- to 6-membered heteroaryl ring containing one to three heteroatoms selected from O, S and N, wherein AR1 is connected to LI via a carbon atom, and wherein AR2 is connected to L1 and L2 via a carbon atom; R1, R2, R3 represent independently hydrogen, halogen, cyano, hydroxyl, C1-C6alkyl, C1-C6haloalkyl, C3-C8cycloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, —C1-C6alkylene-N(R12)R13, —N(R12)R13, —C(O)OR111, —C(O)N(R12)R13,

Abstract: The present invention relates to compounds of formula I or pharmaceutically acceptable salt, solvate or hydrate thereof, wherein ASC is —N(R8)(R9)ASC-1 ASC-1 is Ring A represents a 4- to 6-membered saturated ring containing carbon atoms as ring members in addition to the nitrogen atom and wherein one CH2 moiety in ring A is optionally replaced by CH(R21) and wherein one carbon atom in ring A that is not adjacent to the nitrogen atom is optionally replaced by O, and wherein ring A is connected to X via a carbon atom; X represents a bond, —CH2- or —C(?O)—; AR1, AR2 represent independently phenyl or a 5- to 6-membered heteroaryl ring containing one to three heteroatoms selected from O, S and N, wherein AR1 is connected to L1 via a carbon atom, and wherein AR2 is connected to L1 and L2 via a carbon atom; R1, R2, R3 represent independently hydrogen, halogen, cyano, hydroxyl, C1-C6alkyl, C1-C6haloalkyl, C3-C8cycloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, —C1-C6alkylene-N(R12)R13, —N(R12)R13, —C(O)OR111, —C(O)N(R12)R13,

Abstract: The present invention relates to compounds of formula I or pharmaceutically acceptable salt, solvate or hydrate thereof, wherein ASC is —N(R8)(R9)ASC-1 ASC-1 is Ring A represents a 4- to 6-membered saturated ring containing carbon atoms as ring members in addition to the nitrogen atom and wherein one CH2 moiety in ring A is optionally replaced by CH(R21) and wherein one carbon atom in ring A that is not adjacent to the nitrogen atom is optionally replaced by O, and wherein ring A is connected to X via a carbon atom; X represents a bond, —CH2- or —C(?O)—; AR1, AR2 represent independently phenyl or a 5- to 6-membered heteroaryl ring containing one to three heteroatoms selected from O, S and N, wherein AR1 is connected to L1 via a carbon atom, and wherein AR2 is connected to L1 and L2 via a carbon atom; R1, R2, R3 represent independently hydrogen, halogen, cyano, hydroxyl, C1-C6alkyl, C1-C6haloalkyl, C3-C8cycloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, —C1-C6alkylene-N(R12)R13, —N(R12)R13, —C(O)OR111, —C(O)N(R12)R13,

Abstract: A pharmaceutical composition, comprising a combination of an antibiotically active compound of the formula (I): with a ?-lactamase inhibitor of one of the formulae (II) to (XIII) are active against Gram-negative bacteria, in particular such bacteria which have become resistant against antibiotics such as aztreonam, carumonam and tigemonam. Optionally the compositions may comprise another ?-lactamase inhibitor of one of the formulae (II) to (XIII), particularly of formula (V) or formula (VI).

Abstract: A pharmaceutical composition, comprising a combination of an antibiotically active compound of the formula (I): with a ?-lactamase inhibitor of one of the formulae (II) to (XIII) are active against Gram-negative bacteria, in particular such bacteria which have become resistant against antibiotics such as aztreonam, carumonam and tigemonam. Optionally the compositions may comprise another ?-lactamase inhibitor of one of the formulae (II) to (XIII), particularly of formula (V) or formula (VI).

Abstract: The present invention relates to antibacterial compounds of formula I: wherein all variable substituents are defined as described herein, which are useful for the treatment of bacterial infections.

Abstract: The antibacterial compound of formula I wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C—H, C—(C1-C6alkyl), C—(C1-C6alkoxy), C-halogen, C—COOH; X5 represents C—H or C—(C1-C6alkyl), C-halogen; A1, A2, A3, R1 and R4 represent various substituents, G represents aryl or heteroaryl, which is unsubstituted or substituted which compounds show good activity against pathogenic bacteria.

Abstract: The present invention relates to antibacterial compounds of formula I: wherein all variable substituents are defined as described herein, which are useful for the treatment of bacterial infections.

Abstract: The antibacterial compound of formula I wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C—H, C—(C1-C6alkyl), C—(C1-C6alkoxy), C-halogen, C—COOH; X5 represents C—H or C—(C1-C6alkyl), C-halogen; A1, A2, A3, R1 and R4 represent various substituents, G represents aryl or heteroaryl, which is unsubstituted or substituted which compounds show good activity against pathogenic bacteria.

Abstract: The present invention relates to antibacterial compounds of formula I: wherein all variable substituents are defined as described herein, which are useful for the treatment of bacterial infections.

Abstract: A pharmaceutical composition, comprising a combination of an antibiotically active compound of the formula (I): with a ?-lactamase inhibitor of one of the formulae (II) to (XIII) are active against Gram-negative bacteria, in particular such bacteria which have become resistant against antibiotics such as aztreonam, carumonam and tigemonam. Optionally the compositions may comprise another ?-lactamase inhibitor of one of the formulae (II) to (XIII), particularly of formula (V) or formula (VI).

Abstract: The present invention relates to antibacterial compounds of formula I: wherein all variable substituents are defined as described herein, which are useful for the treatment of bacterial infections.

Abstract: The antibacterial compound of formula I wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C—H, C—(C1-C6alkyl), C—(C1-C6alkoxy), C-halogen, C—COOH; X5 represents C—H or C—(C1-C6alkyl), C-halogen; A1, A2, A3, R1 and R4 represent various substituents, G represents aryl or heteroaryl, which is unsubstituted or substituted which compounds show good activity against pathogenic bacteria.

Abstract: New monobactam antibiotics compounds which contain an 3-amino-azetidin-2-one ring and are active against gram-negative bacteria, wherein the compounds include the compound 2-(2-amino-thiazol-4-yl)-2-[(Z)-(1H,4H-1,5-dihydroxy-4-oxo-pyridin-2-yl)methoxyimino]-N-[3(S)-1-oxysulfonyl-2,2-dimethyl-4-oxo-azetidin-3-yl]acetamide.

Abstract: Compounds of formula (I), wherein A1 represents —O—, —S— or —CH2—; A2 represents —CH2— or —O—; A3 represents C3-C8-cycloalkylene; saturated or unsaturated 4 to 8-membered heterocyclodiyl with 1, 2 or 3 heteroatoms selected from nitrogen or oxygen, which group A3 is unsubstituted or substituted; A4 represents C1-C4alkylene, —C(=0)-; G represents aryl or heteroaryl, which is unsubstituted or substituted; X1 represents a nitrogen atom or CR1; R1 represents a hydrogen atom or a halogen atom; R1 represents a hydrogen atom; m is 0 or 1; n is 1; the —(CH2)n— group is unsubstituted or substituted; p is 0 or 1; or pharmaceutically acceptable salts thereof are valuable for use as a medicament for the treatment of bacterial infections.

Abstract: The antibacterial compound of formula I wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C—H, C—(C1-C6alkyl), C—(C1-C6alkoxy), C-halogen, C—COOH; X5 represents C—H or C—(C1-C6alkyl), C-halogen; A1, A2, A3, R1 and R4 represent various substituents, G represents aryl or heteroaryl, which is unsubstituted or substituted which compounds show good activity against pathogenic bacteria.

Abstract: The antibacterial compound of formula I wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C—H, C—(C1-C6alkyl), C—(C1-C6alkoxy), C-halogen, C—COOH; X5 represents C—H or C—(C1-C6alkyl), C-halogen; A1, A2, A3, R1 and R4 represent various substituents, G represents aryl or heteroaryl, which is unsubstituted or substituted which compounds show good activity against pathogenic bacteria.

Abstract: Compound of formula (I): wherein A1 represents —O—, —S— or —N—R3; A2 represents —CH2—, —O—, —N—R4, —C(?O)— or —CH(O—R4)—; A3 represents C3-C8cycloalkylene; saturated and unsaturated 4 to 8-membered heterocyclodiyl with 1, 2 or 3 heteroatoms selected from nitrogen, oxygen and sulphur, which group A3 is unsubstituted or substituted; A4 represents C1-C4alkylene, C2-C4alkenylene, >C?O or a group selected from —C2H4NH—, —C2H4O—, and —C2H4S— being linked to the adjacent NR5-group via the carbon atom; and G represents aryl or heteroaryl, which is un-substituted or substituted and R1 and R2 independently of one another, represent hydrogen or a substituent selected from hydroxy, halogen, mercapto, cyano, nitro, C1-C6alkyl, C1-C6alkoxy, C1-C6alkylthio, C1-C6alkylcarbonyloxy, C1-C6alkylsulfonyloxy, C1-C6heteroalkylcarbonyloxy, C5-C6heterocyclylcarbonyloxy, C1-C6heteroalkoxy, wherein heteroalkyl, heteroalkoxy groups or heterocyclyl comprise 1, 2 or 3 heteroatoms selected from nitrogen, oxygen and sulphur, in which sub

Abstract: Compounds of formula (I) wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C—H, C—(C1-C6alkyl), C—(C1-C6alkoxy), C-halogen, C—COOH; X5 represents C—H or C—(C1-C6alkyl), C-halogen; R1 and R2, independently of one another, represent hydrogen or a substituent selected from hydroxy, halogen, carboxy, amino, C1-C6alkylamino, di(C1-C6alkyl)amino, mercapto, cyano, nitro, C1-C6alkyl, C1-C6alkoxy, C1-C6alkylthio, C1-C6alkylamino-carbonyloxy, C2-C6alkenyl, C2-C6alkynyl, C1-C6alkylcarbonyloxy, C1-C6alkyl-sulfonyloxy, C1-C6heteroalkylcarbonyloxy, C5-C6heterocyclyl-carbonyloxy, C1-C6heteroalkyl, C1-C6heteroalkoxy, wherein heteroalkyl, heteroalkoxy groups or heterocyclyl comprise 1, 2 or 3 heteroatoms selected from nitrogen, oxygen and sulphur, in which substituents the alkyl moieties are unsubstituted or further substituted by halogeno, cyano, hydroxy, C1-C4alkoxy, C1-C4alkylcarbo