Synthesis and 5-hydroxytryptamine antagonist activity of 2-[[2-(dimethylamino)ethyl]thio]-3-phenylquinoline and its analogs
摘要:
A series of 2-[(2-aminoethyl)thio]quinolines substituted at the 3-position with alkyl, aryl, or heteroaryl groups has been prepared in the search for novel and selective 5-HT2 antagonists. The affinity of the compounds for 5-HT1 receptor sites was measured by their ability to displace [3H]-5-HT from rat brain synaptosomes whereas the affinity for 5-HT2 receptor sites was measured by their ability to displace [3H]spiperone from synaptosomes prepared from rat brain cortex. The 5-HT2 antagonist properties of the compounds were measured in vivo by their antagonism of 5-hydroxytryptophan-induced head twitches in the mouse and by their antagonism of hyperthermia induced by fenfluramine (N-ethyl-alpha-methyl-m-(trifluoromethyl)phenethylamine hydrochloride) in the rat. The structure-activity relationships in this series are discussed and the properties of 2-[[2-(dimethylamino)ethyl]thio]-3-phenylquinoline hydrochloride (70) are highlighted.
Nitrogen enriched mesoporous organic polymer anchored copper(<scp>ii</scp>) material: an efficient and reusable catalyst for the synthesis of esters and amides from aromatic systems
作者:Rostam Ali Molla、Md. Asif Iqubal、Kajari Ghosh、Kamaluddin Kamaluddin、Sk. Manirul Islam
DOI:10.1039/c4dt03838j
日期:——
New mesoporous polymer anchored copper acetate (Cu-mPMF) has been synthesized and well characterized. The catalytic performance of this complex has been tested for the synthesis of esters and amides.
Carbene Radicals in Cobalt(II)-Porphyrin-Catalysed Carbene Carbonylation Reactions; A Catalytic Approach to Ketenes
作者:Nanda D. Paul、Andrei Chirila、Hongjian Lu、X. Peter Zhang、Bas de Bruin
DOI:10.1002/chem.201301731
日期:2013.9.23
One‐pot radicals: Cobalt(III)–carbene radicals, generated by metallo‐radical activation of diazo compounds and N‐tosylhydrazone sodium salts with cobalt(II) complexes of porphyrins, readily undergo radical addition to carbon monoxide, allowing the catalytic production of ketenes. These ketenes subsequently react with various amines, alcohols and imines in one‐pot tandem transformations to produce differently
Pd-Catalyzed Carbonylation of Diazo Compounds at Atmospheric Pressure: A Catalytic Approach to Ketenes
作者:Zhenhua Zhang、Yiyang Liu、Lin Ling、Yuxue Li、Yian Dong、Mingxing Gong、Xiaokun Zhao、Yan Zhang、Jianbo Wang
DOI:10.1021/ja107351d
日期:2011.3.30
and affects the diastereoselectivity of the β-lactam products by assisting isomerization of the addition intermediate. On the other hand, the acylketenes generatedfrom the Pd-catalyzed carbonylation of α-diazoketones react with imines in a formal [4 + 2] cycloaddition manner to afford 1,3-dioxin-4-one derivatives. This straightforward carbonylation provides a new approach toward highly efficient catalytic
Direct Csp<sup>3</sup>–H methylenation of 2-arylacetamides using DMF/Me<sub>2</sub>NH-BH<sub>3</sub> as the methylene source
作者:Yuting Liu、Chang-Ling Wang、Hui-Min Xia、Zhijuan Wang、Yi-Feng Wang
DOI:10.1039/c9ob00875f
日期:——
A direct Csp3–H methylenation of 2-arylacetamides using DMF/Me2NH-BH3 as the methylene source was developed. The formyl group of DMF delivered the carbon and one hydrogen atoms, and the Me2NH-BH3 donated the remaining one hydrogen atom. This protocol offers a new alternative to make useful 2-arylacrylamides from simple starting materials.
Molybdenum-Mediated Desulfurization of Thiols and Disulfides
作者:Yoichiro Kuninobu、Motomu Kanai、Zhen Wang
DOI:10.1055/s-0034-1378315
日期:——
We have successfully achieved the molybdenum hexacarbonyl [Mo(CO)6] mediated desulfurization of thiols and disulfides. In this reaction, the sulfhydryl (SH) mercapto groups of aryl, benzyl, primary and secondary alkyl thiols, and S–S single bonds of disulfides can be removed. This reaction has high functional group tolerance and is not affected by steric hindrance. The results of the reactions in acetone-d