[EN] HYDROXYMETHYL PYRROLIDINES AS BETA 3 ADRENERGIC RECEPTOR AGONISTS<br/>[FR] HYDROXYMÉTHYLPYRROLIDINES EN TANT QU'AGONISTES DE RÉCEPTEUR BÊTA-3-ADRÉNERGIQUE
申请人:MERCK & CO INC
公开号:WO2009123870A1
公开(公告)日:2009-10-08
The present invention provides compounds of Formula I, pharmaceutical compositions thereof, and method of using the same in the treatment or prevention of diseases mediated by the activation of β3-adrenoceptor.
Various carbon-carbon double bonds in olefins and α,β-unsaturatedketones were effectively reduced to the corresponding alkanes and saturated ketones, using ammoniumformate as a hydrogentransfer agent in the presence ofPd/C as catalyst in refluxing methanol.
以甲酸铵为氢转移剂,Pd/C为催化剂,甲醇回流。
Synthesis by conjugate radical addition of new heterocyclic amino acids with nucleobase side chains
作者:Raymond C.F Jones、Didier J.C Berthelot、James N Iley
DOI:10.1016/s0040-4020(01)00546-4
日期:2001.7
N-(2-iodoethyl) and N-(3-iodopropyl)pyrimidines and purines undergo stereoselective conjugate radical addition with an optically active oxazolidinone acceptor to give syn-adducts that can be converted into aminoacids carrying pyrimidine and purine (nucleobase) side chains.
Synthesis by conjugate radical addition of new heterocyclic amino acids with nucleic acid bases in their side chains
作者:Raymond C. F. Jones、Didier J. C. Berthelot、James N. Iley
DOI:10.1039/b006843h
日期:——
N-(2-Iodoethyl) and N-(3-iodopropyl)pyrimidines and purines undergo stereoselective conjugate radical addition with an optically active oxazolidinone acceptor to give syn-adducts that can be converted into pyrimidine and purine amino acids.
Toward Fractioning of Isomers through Binding-Induced Acceleration of Azobenzene Switching
作者:Rosaria Vulcano、Paolo Pengo、Simone Velari、Johan Wouters、Alessandro De Vita、Paolo Tecilla、Davide Bonifazi
DOI:10.1021/jacs.7b09568
日期:2017.12.20
accelerated upon formation of the H-bonded complex. DFT calculations show that the formation of triple H-bonds triggers a significant elongation of the N═N double bond, caused by an increase of its πg* antibonding character. This results in a reduction of the N═N torsional barrier and thus in accelerated thermal Z → E isomerization. Combined with light-controlled E → Z isomerization, this enables controllable
鉴于其与适当互补的 2,6-二乙酰氨基-4-吡啶配体形成三重 H 键配合物的能力,研究了尿嘧啶 - 偶氮苯衍生物的 E/Z 异构化过程,其中核碱基与苯基二氮烯尾部共轭. 光化学和热异构化动力学的 UV-vis 和 1H NMR 研究表明,在形成 H 键配合物后,热 Z → E 互变加速了 4 倍。DFT 计算表明,三重 H 键的形成触发了 N=N 双键的显着伸长,这是由其 πg* 反键特性的增加引起的。这导致 N=N 扭转势垒降低,从而加速热 Z → E 异构化。结合光控E→Z异构化,