4-Amino-5-imidazolecarboxamide (l), an amine found to accumulate in bacterial systems poisoned either by sulfonamides (2, 3) or aminopterin (4), has been suggested as an intermediate of purine synthetic reactions (5, 6). Although the metabolic inertness of the carboxamide’ in certain bacterial systems (7, 8) led to the belief by some (8) that this compound was an aberrant product of metabolism ...

There are two independent mol-ecules in the asymmetric unit of the title compound, C(15)H(12)ClN(2)O(2). In each mol-ecule, the two benzene rings adopt a cis configuration with respect to the ep-oxy ring. The dihedral angles between the ep-oxy ring and chloro-phenyl rings are essentially identical in the two mol-ecules [62.50 (9) and 62.67 (9)°]. Inter-molecualar N-H⋯O and C-H⋯O hydrogen bondin...

The mol-ecule of the title compound, C(15)H(12)N(2)O(4), adopts a syn conformation with the terminal benzene rings located on the same sides of the central epoxide ring. The epoxide ring makes dihedral angles of 71.08 (18) and 60.83 (17)° with the two benzene rings. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.

There are two independent mol-ecules in the asymmetric unit of the title compound, C(15)H(12)BrNO(2). In both mol-ecules, the two benzene rings adopt a cis configuration with respect to the ep-oxy ring. In one mol-ecule, the ep-oxy ring makes dihedral angles of 60.5 (2) and 77.92 (19)° with the two benzene rings; in the other mol-ecule, the values are 61.0 (2) and 81.43 (19)°. Inter-molecular N...

In the title compound, C(5)H(5)N(3)O(3), the nitro group is twisted with respect to the amide group, with C-N-N-O torsion angles of 29.0 (2) and -153.66 (14)°. In the crystal, mol-ecules are linked through inter-molecular N-H⋯O and C-H⋯O hydrogen bonds, forming supra-molecular chains along the a axis. These chains stack in parallel and form distinct layer motifs in the (001) plane.

1-Benzyl-N-(2,6-dimethylphenyl)piperidine-3-carboxamide and 4-benzyl-N-(2,6-dimethylphenyl)piperazine-2-carboxamide, two conformationally restricted analogues of tocainide, were designed and synthesized as voltage-gated skeletal muscle sodium channel blockers. They showed, with respect to tocainide, a marked increase in both potency and use-dependent block.

A series of pyridine-bridged 2,6-bis-carboxamide Schiff's bases has been prepared starting from 2,6-pyridinedicarbonyl dichloride (1) and L-alanine or 2-methyl-alanine methyl ester.The coupling of acid chloride 1 with L-alanine methyl ester hydrochloride -or 2-methylalanine methyl ester hydrochloride gave the corresponding 2,6-bis-carboxamide pyridine methyl esters 2a,b.Hydrazonolysis of 2 with...

A series of sixteen pyrazinamide analogues with the -CONH- linker connecting the pyrazine and benzene rings was synthesized by the condensation of chlorides of substituted pyrazinecarboxylic acids with ring-substituted (chlorine) anilines. The prepared compounds were characterized and evaluated for their antimycobacterial and antifungal activity, and for their ability to inhibit photosynthetic ...