Modulation of thermo-transient receptor potential (thermo-TRP) channels by thymol-based compounds
摘要:
A series of thirty-three thymol, p-cymene-3-carboxylic acid, and 3-amino-p-cymene derivatives was synthesized and tested on TRPA1, TRPM8, and TRPV3 channels. Most of them acted as strong modulators of TRPA1, TRPM8, and TRPV3 channels with EC50 and/or IC50 values distinctly lower than those of thymol and related monoterpenoids. Some of the compounds examined, that is, 3c, 4e, f, 6b, and 8b exhibited an appreciable subtype-selectivity. (C) 2012 Elsevier Ltd. All rights reserved.
Carboxylation of Aryl Triflates with CO<sub>2</sub> Merging Palladium and Visible-Light-Photoredox Catalysts
作者:Samir Kumar Bhunia、Pritha Das、Shantanu Nandi、Ranjan Jana
DOI:10.1021/acs.orglett.9b01532
日期:2019.6.21
visible-light-promoted, highly practical carboxylation of readily accessible aryl triflates at ambient temperature and a balloon pressure of CO2 by the combined use of palladium and photoredox Ir(III) catalysts. Strikingly, the stoichiometric metallic reductant is replaced by a nonmetallic amine reductant providing an environmentally benign carboxylation process. In addition, one-potsynthesis of a carboxylic
Reduction of sulfonates and aromatic compounds with the NiCl2·2H2OLi-arene (cat.) combination
作者:Gabriel Radivoy、Francisco Alonso、Miguel Yus
DOI:10.1016/s0040-4020(99)00893-5
日期:1999.12
A series of alkyl mesylates, dimesylates and alkyl or aryl triflates have been reduced to the corresponding hydrocarbons with nickel(II) chloride dihydrate, an excess of lithium powder and a catalytic amount of DTBB (10 mol%) in THF at room temperature. This methodology applied to enol triflates allowed the preparation of olefins or alkanes depending on the amount of the Ni(II) salt used. The reduction
Synthesis of Unnatural Amino Acids via Suzuki Cross-Coupling of Enantiopure Vinyloxazolidine Derivatives
作者:Mark Sabat、Carl R. Johnson
DOI:10.1021/ol005645i
日期:2000.4.1
S)-alpha-Amino alcohols and alpha-amino acids, including 4-methoxyhomophenylalanine, with a variety of unnatural side chains have been synthesized via palladium-catalyzed cross-coupling Suzuki reactions. The key buildingblocks 1 and 2, synthesized from the common achiral precursor 2-butene-1,4-diol, were made enantiopure utilizing a Pseudomonas cepacia lipase-catalyzed kinetic resolution. The optimal
An operationally simple hydroxycarbonylation of aryl and vinyl triflates to the corresponding carboxylic acids with a palladium-mediated microwave system was carried out in water.
作者:Ji Hye Kim、Ilija Čorić、Sreekumar Vellalath、Benjamin List
DOI:10.1002/anie.201300120
日期:2013.4.15
In straitened circumstances: In an asymmetric version of the acid‐catalyzed acetalization of aldehydes, a novel member of the chiral confined Brønsted acid family significantly outperformed previously established catalysts, providing cyclic acetals with excellent enantioselectivity (see scheme; Ar=2‐iPr‐5‐MeC6H3).
在僵化的情况下:在醛的酸催化乙缩醛的不对称形式中,手性约束布朗斯台德酸家族的新型成员显着优于以前建立的催化剂,提供了具有出色对映选择性的环状环状缩醛(见方案; Ar = 2- i Pr- 5-MeC 6 H 3)。