نتایج جستجو برای: azaheterocycles
تعداد نتایج: 47 فیلتر نتایج به سال:
This thesis deals with the development of synthetic methodologies for the preparation of enantioand diastereomerically enriched nitrogen-containing heterocycles. Asymmetric Lewis acid mediated Diels-Alder reactions with 2H-azirines as dienophiles have been studied. Diastereoselective reactions with enantiomerically pure auxiliary-derived 2H-azirines afforded substituted biand tri-cyclic azahete...
Human aldehyde oxidase (AO) is a molybdoflavoenzyme that commonly oxidizes azaheterocycles in therapeutic drugs. Although high metabolic clearance by AO resulted in several drug failures, existing in vitro–in vivo correlations are often poor and the extrahepatic role of AO practically unknown. This study investigated enzymatic activity of AO in fresh human skin, the largest organ of the body, f...
An efficient and convenient approach towards the synthesis of nitrogen fused imidazoheterocycles through double C-N bond formation in a single step has been achieved with a good range of substituted phenacyl bromides in the presence of magnetically recoverable Fe3O4 as a green heterogeneous nanocatalyst. The present approach was found to be environmentally benign and econo...
An efficient and convenient approach towards the synthesis of nitrogen fused imidazoheterocycles through double C-N bond formation in a single step has been achieved with a good range of substituted phenacyl bromides in the presence of magnetically recoverable Fe3O4 as a green heterogeneous nanocatalyst. The present approach was found to be environmentally benign and econo...
The importance and increased demand of pharmaceutically active azaheterocycles has urged the development of inexpensive and environmentally benign catalytic asymmetric technologies. 2] In this context, the pyrazolidine and pyrazoline structural motif is present in several compounds with significant bioactivities, such as anti-inflammatory, antidepressant, anticancer, antibacterial and antiviral...
Open AccessCCS ChemistryRESEARCH ARTICLE1 Jul 2021Asymmetric Spirocyclization Enabled by Iridium and Brønsted Acid-Catalyzed Formal Reductive Cycloaddition Nan-Fang Mo†, Le Yu†, Ying Zhang, Ya-Hong Yao, Xun Kou, Zhi-Hui Ren Zheng-Hui Guan Mo† Key Laboratory of Synthetic Natural Functional Molecule Ministry Education, Department Chemistry & Materials Science, Northwest University, Xi’an 710127 †...
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