نتایج جستجو برای: pyridopyrimidine 5 carbohydrazide
تعداد نتایج: 1216072 فیلتر نتایج به سال:
The title compound, C21H26N4S, was synthesized by the condensation reaction of 4-iso-propyl-benzaldehyde with thio-carbohydrazide in ethanol. The planes of the two benzene rings in the mol-ecule are inclined at 22.6 (1)°. In the crystal, pairs of inter-molecular N-H⋯S hydrogen bonds link the mol-ecules into inversion dimers.
A series of novel pyridine carbohydrazide derivatives were synthesized from the reaction of 2-chloro-6-hydrazino-isonicotinic acid hydrazide with selected active reagents. All prepared compounds were tested as analgesic and anticonvulsant agents. The pharmacological screening showed that many of these compounds have good activities comparable to those of valdecoxib and carbamazepine as referenc...
An efficient and facile green synthesis of chalcone derivatives 1a-d was achieved by treatment aromatic aldehydes with 2-acetylthiophene in the presence choline chloride-urea mixture as a deep eutectic solvent. Chalcone 1a used reactive key precursor to design series bio-active heterocycles such pyrimidine, pyrazoline, pyridine, pyridopyrimidine naphthyridine. The Structural formula were confir...
The title compound, C(13)H(9)N(3)OS, was prepared by the reaction of thio-phene-2-carbohydrazide and 4-formyl-benzonitrile. The dihedral angle between the benzene and thio-phene rings is 11.9 (1)°. In the crystal structure, mol-ecules are linked into centrosymmetric dimers by pairs of N-H⋯O hydrogen bonds.
The title compound, C(14)H(14)N(2)O(2), was prepared by the reaction of 3,4-dimethyl-benzaldehyde and furan-2-carbohydrazide. The dihedral angle between the aromatic rings is 35.48 (14)°. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, generating C(4) chains propagating in [010].
In continuance of our search for newer antihepatotoxic agents some novel thiazolidinone derivatives containing 1,4-benzodioxane ring system were synthesized starting from 2,3-dihydro-1,4-benzodioxane-2-carbohydrazide. The synthesized compounds were evaluated for antihepatotoxic activity against CCl4-induced hepatotoxicity in rats. Among them some compounds have shown significant antihepatotoxic...
In the title compound, C(12)H(10)N(2)O(2), the dihedral angle between the benzene ring and the furan ring is 24.6 (2)°. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, generating C(4) chains propagating in [010].
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