- 2-(Halogenated Phenyl) acetamides and propanamides as potent TRPV1 antagonists
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A series consisting of 117 2-(halogenated phenyl) acetamide and propanamide analogs were investigated as TRPV1 antagonists. The structure–activity analysis targeting their three pharmacophoric regions indicated that halogenated phenyl A-region analogs exhibited a broad functional profile ranging from agonism to antagonism. Among the compounds, antagonists 28 and 92 exhibited potent antagonism toward capsaicin for hTRPV1 with Ki[CAP] = 2.6 and 6.9 nM, respectively. Further, antagonist 92 displayed promising analgesic activity in vivo in both phases of the formalin mouse pain model. A molecular modeling study of 92 indicated that the two fluoro groups in the A-region made hydrophobic interactions with the receptor.
- Ann, Jihyae,Bahrenberg, Gregor,Blumberg, Peter M.,Choi, Sun,Christoph, Thomas,Do, Nayeon,Frank-Foltyn, Robert,Ha, Heejin,Jeong, Jin Ju,Kang, Jin Mi,Kim, Changhoon,Kwon, Sun Ok,Lee, Jeewoo,Lee, Sunho,Lesch, Bernhard,Stockhausen, Hannelore,Vu, Thi Ngoc Lan,Yoon, Sanghee
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- Regio- and chemoselective C-H chlorination/bromination of electron-deficient arenes by weak coordination and study of relative directing-group abilities
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It's all relative: A practical and efficient PdII-catalyzed regio- and chemoselective chlorination/bromination has been developed for the facile synthesis of a broad range of aromatic chlorides. The reaction demonstrates excellent reactivity, good functional-group tolerance, and high yields. A preliminary study was conducted to evaluate relative directing-group abilities of various functionalities. Copyright
- Sun, Xiuyun,Shan, Gang,Sun, Yonghui,Rao, Yu
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supporting information
p. 4440 - 4444
(2013/05/22)
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- Thiadiazole-based Thioglycosides as Sodium-glucose Co-transporter 2 (SGLT2) Inhibitors
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A series of thiadiazole-based thioglycosides were synthesized as SGLT2 inhibitors from D-glucose, D-galactose and a variety of phenylacetic acids via a convenient protocol in 8 steps and evaluated in vivo with an oral glucose tolerance test (OGTT), and 5-benzyl-1,3,4-thiadiazol-2-yl 1-thio-β-D-glucopyranoside (1a) was the most efficacious to suppress the blood glucose excursion during OGTT.
- Gao, Yunlong,Zhao, Guilong,Liu, Wei,Wang, Yuli,Xu, Weiren,Wang, Jianwu
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scheme or table
p. 605 - 612
(2010/10/19)
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- Electrochemistry of some Ethyl α-Bromo(Dihalophenyl) Acetates and Electrochemical Synthesis of Diastereoisomeric Diethyl 2,3-Bis(dihalogenophenyl)Succinates
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Ethyl α-bromo-2,4- or -3,4-dihalogenophenylacetates (ABr), where halogen = F or Cl, are prepared and electrolysed on reticulated vitreous carbon (RVC) in dimethylformamide containing Et4NClO4 (0.1 mol dm-3).Potentiostatic reduction at E = -1.6 to -1.8 V versus SCE furnishes the corresponding racemic and meso succinates (AA) (13)-(16).Monoesters AH (5)-(8) are also isolated.An excess of racemic isomer is observed for (14), (15), and (16).Voltammetric experiments show practically no difference between the reduction potentials of the isomeric compounds.Diastereoisomers can be distinguished by NMR spectroscopy, allowing diastereoisomeric excess (de) to be evaluated before isolation of the single products.A mechanism involving radical intermediates A* cannot be excluded.On this basis, the des can be explained by assuming different geometries for A* when the phenyl group bears different substituents.
- Mattiello, Leonardo,Luca, Carlo De,Rampazzo, Liliana
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p. 1041 - 1044
(2007/10/02)
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- Desulfurization and Carbonylation of Mercaptans
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The first examples of the carbonylation of mercaptans are described: cobalt carbonyl catalyzes the desulfurization and carbonylation of mercaptans to carboxylic esters by means of carbon monoxide in aqueous alcohol.
- Shim, Sang Chul,Antebi, Shlomo,Alper, Howard
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p. 147 - 149
(2007/10/02)
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