strategy, we broke this consensus and discovered a catalyst-free photodecarbonylation of the aldehyde group. It revealed that decarbonylation can be easily achieved with visible light irradiation by introducing a tertiary amine into the ortho-position of the aldehyde group. A diverse array of tertiary amines is tolerated by our photodecarbonylation under mild conditions. Furthermore, the (QM) computations
2-[(2-Aminobenzyl)sulfinyl]-1-(2-pyridyl)-1,4,5,6-tetrahydrocyclopent[<i>d</i>]imidazoles as a Novel Class of Gastric H<sup>+</sup>/K<sup>+</sup>-ATPase Inhibitors
Substituted 2-sulfinylimidazoles were synthesized and investigated as potential inhibitors of gastricH+/K(+)-ATPase. The 4,5-unsubstituted imidazole series 6-11 and the 1,4,5,6-tetrahydrocyclopent[d]imidazole series 12 were found to be potent inhibitors of the acid secretory enzyme H+/K(+)-ATPase. Structure-activity relationships indicate that the substitution of 2-pyridyl groups at the 1-position
[EN] CYCLIC PHOSPHONATE ESTER INHIBITORS OF MICROSOMAL TRIGLYCERIDE TRANSFER PROTEIN AND METHOD<br/>[FR] INHIBITEURS PHOSPHONATE ESTER CYCLIQUE DE PROTEINE MICROSOMALE DE TRANSFERT DES TRIGLYCERIDES ET PROCEDE ASSOCIE
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:WO1999021564A1
公开(公告)日:1999-05-06
(EN) Novel cyclic phosphonate ester inhibitors of MTP are provided which have structure (I) wherein R2, L2, A, B, L1, R1 and R5a are as set out herein. These compounds are useful in lowering serum cholesterol and triglycerides.(FR) Nouveaux inhibiteurs phosphonate ester cyclique de MTP de structure (I) dans laquelle R2, L2, A, B, L1, R1 et R5a sont tels que décrits dans le descriptif. Ces composés sont utiles pour abaisser le taux sérique de cholestérol et de triglycérides.
Removable bidentate directing group assisted-recyclable metal–organic frameworks-catalyzed direct oxidative amination of Sp 2 C–H bonds
作者:Nga T.T. Tran、Quan H. Tran、Thanh Truong
DOI:10.1016/j.jcat.2014.09.015
日期:2014.12
Several Cu-MOFs were showed to be efficient heterogeneous catalysts for ortho-amination of benzoic acid derivative C-H bonds by N-H amines using 8-aminoquinoline as bidentate directing group. The optimal reaction conditions involve the use of Cu-MOFs (25%), N-methylmorpholine oxide (NMO) as an oxidant, secondary or primary amine coupling partner, DMF, DMA, or NMP solvent at 90-100 degrees C. Furthermore, the Cu-MOFs catalyst could be facilely isolated from the reaction mixture and reused several times without remarkable degradation in catalytic reactivity. Contribution from homogeneous leached active copper species, if any, is negligible. To the best of our knowledge, C-H activation reactions using bidentate directing groups, which are increasingly gaining importance, under heterogeneous catalytic systems were not previously mentioned in the literature. (C) 2014 Elsevier Inc. All rights reserved.