Discovery and development of a novel class of phenoxyacetyl amides as highly potent TRPM8 agonists for use as cooling agents
作者:Alain Noncovich、Chad Priest、Jane Ung、Andrew P. Patron、Guy Servant、Paul Brust、Nicole Servant、Nathan Faber、Hanghui Liu、Nicole S. Gonsalves、Tanya L. Ditschun
DOI:10.1016/j.bmcl.2017.04.003
日期:2017.8
The paper presents the activity trends for a novel series of phenoxyacetyl amides as human TRPM8 receptor agonists. This series encompasses in vitro activity values ranging from the micromolar to the picomolar levels. Sensory evaluation of these molecules highlights their relevance as cooling agents for oral applications. The positive outcome of the complete evaluation of N-(1H-pyrazol-3-yl)-N-(th
Tandem intramolecular wittig and claisen rearrangement reactions in the thermolysis of 2-methyl-2-phenoxy-propionyl-cyanomethylenetriphenylphosphoranes: synthesis of substituted 2H-1-benzopyrans and benzofurans
作者:H. Rehman、Jampani Madhusudana Rao
DOI:10.1016/s0040-4020(01)87711-5
日期:1987.1
The preparation and thermolysis in vacuum of 2-niethyl-2-phenoxypropionyl-cyanomethylenetriphenylphoephoraane and derivatives containing methyl-methoxy- and chloro- substituents in the phenoxy ring is reported. The method merges the preparation of phenyl propargyl ethers by intramolecular Wittig reaction and their Claisen rearrangement into one step. The final products were the corresponding 2H-1-benzopyran
An efficient enantioselective hydrogenation of sterically hindered cyclic imines catalyzed by the Ir-tBu-ax-Josiphos complex has been described, producing a series of useful chiral bulky tetrahydroisoquinoline analogs in high isolated yields (85–96%) with good to excellent enantioselectivities (74–99% ee). This transformation provided highly straightforward access to the useful derivatives of tetrahydroisoquinolines
Pd(II)-Catalyzed <i>ortho</i>- or <i>meta</i>-C–H Olefination of Phenol Derivatives
作者:Hui-Xiong Dai、Gang Li、Xing-Guo Zhang、Antonia F. Stepan、Jin-Quan Yu
DOI:10.1021/ja400659s
日期:2013.5.22
A combination of weakly coordinating auxiliaries and ligand acceleration allows for the development of both ortho- and meta-selective C-H olefination of phenol derivatives. These reactions demonstrate the feasibility of directing C-H functionalizations when functional groups are distal to target C-H bonds. The meta-C-H functionalization of electron-rich phenol derivatives is unprecedented and orthogonal to previous electrophilic substitution of phenols in terms of regioselectivity. These methods are also applied to functionalize alpha-phenoxyacetic acids, a fibrate class of drug scaffolds.