نتایج جستجو برای: 2 substituted benzimidazoles

تعداد نتایج: 2550956  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

Journal: :Antimicrobial agents and chemotherapy 1997
S K Katiyar T D Edlind

Recent reports have described the successful treatment of Encephalitozoon intestinalis infection in AIDS patients with albendazole. However, this compound is rapidly metabolized in vivo to albendazole sulfoxide, and furthermore it is only 1 of about 15 commercially developed benzimidazole derivatives. To compare the activities of albendazole, albendazole sulfoxide, and other benzimidazoles, an ...

2017
Qianchun Zhang Yulan Liu Xingyi Wang Huimin Li Junyu Chen

A novel method was proposed for the determination of five benzimidazoles (oxfendazole, mebendazole, flubendazole, albendazole, and fenbendazole) using magnetic graphene (G-Fe3O4). G-Fe3O4 was synthesized via in situ chemical coprecipitation. The properties of G-Fe3O4 were characterized by various instrumental methods. G-Fe3O4 exhibited a great adsorption ability and good stability towards analy...

2012
Qing Wang Zhong-Ye Fu Liang-Min Yu

In the title compound, [HgBr(2)(C(15)H(17)N(5))], the Hg(II) ion is tetra-hedrally coordinated by two N atoms of the N-[1-(1H-benzimidazol-2-yl)ethyl-idene-κN]-3-(1H-imidazol-1-yl)propan-1-amine ligand, and two bromide anions. Inter-molecular benzimidazole-imidazole N-H⋯N hydrogen bonds link the mol-ecules into helical chains along the b-axis direction and C-H⋯Br hydrogen bonds link these chain...

2010
S. Selvanayagam B. Sridhar K. Ravikumar S. Kathiravan R. Raghunathan

In the title compound, C(29)H(28)N(4)O(3), the pyrrolidine ring adopts a twist conformation whereas the oxindole and benzimidazole residues are approximately planar with maximum deviations of 0.159 (1) and 0.011 (1) Å, respectively. The oxindole residue is almost perpendicular to the benzimidazole residue, making a dihedral angle of 89.2 (1)°. The methyl-substituted benzene ring is oriented at ...

2009
Frank Rominger Mahalingam Malathi Palathurai Subramaniam Mohan Tanuja Ramamurthi Dondeti A. Stephen K. Hashmi

Two independent mol-ecules of the title compound, C(17)H(12)ClN(3), are present in the structure. The angle between the planes defined by the atoms of the benzimidazole unit and the quinoline unit are 45.2 (3) and 44.0 (3)°, indicating an essentially identical conformation for both mol-ecules. Each of the independent mol-ecules is linked with a symmetry equivalent by an inter-molecular N-H⋯N hy...

2009
Li-Juan Chen Shen Lin Ming-Xing Yang Xiao-Yuan Wu

In the title compound, [Zn(C(8)H(4)O(7)S)(C(12)H(9)N(3))(2)]·H(2)O, the Zn(II) atom has a distorted octa-hedral coordination geometry, defined by four N atoms from two 2-(2-pyrid-yl)-1H-benzimidazole ligands and two O atoms from a deprotonated carboxyl-ate group of the 3-carb-oxy-5-sulfonatobenzoate ligand. In the crystal structure, the complex mol-ecules are linked into a three-dimensional net...

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