Design of Helicobacter pylori glutamate racemase inhibitors as selective antibacterial agents: A novel pro-drug approach to increase exposure
作者:Gregory S. Basarab、Pamela J. Hill、Abdullah Rastagar、Peter J.H. Webborn
DOI:10.1016/j.bmcl.2008.06.092
日期:2008.8
High-throughput screening uncovered a pyrazolopyrimidinedione hit as a selective, low micromolar inhibitor of Helicobacter pylori glutamateracemase (MurI). Variation of the substituents around the scaffold led to low nanomolar inhibitors and improved antibacterial activity. The challenge in this program was to translate excellent enzyme inhibition into potent antibacterial activity and pharmacokinetics
The invention provides compounds of formula la, lb and Ic: [Formula Ia, Ib, and Ic] and salts thereof, wherein variables are as described in the specification, as well as compositions comprising a compound of formula Ia-Ic, methods of making such compounds, and methods of using such compounds, e.g., as inhibitors of bacterial RNA polymerase and as antibacterial agents.
One-Pot Amberlyst 15-Controlled Cyclocondensation of Piperidines and Arylaldehydes: Synthesis of 3,5-Diarylmethylpyridines
作者:Meng-Yang Chang、Yu-Lin Tsai
DOI:10.1021/acs.joc.9b03315
日期:2020.4.17
Amberlyst 15-controlled one-pot easy-operational intermolecular cyclocondensation of substituted piperidines with arylaldehydes provides diversified 3,5-diarylmethylpyridines in high to excellent yields under refluxing toluene conditions. The uses of various acidic solid supports and reaction solvents are investigated for facile and efficient transformation. A plausible mechanism has been proposed
申请人:Centre International de Recherches Dermatologiques Galderma
公开号:US06147255A1
公开(公告)日:2000-11-14
The invention relates to novel bicyclic aromatic compounds which have the general formula (I): ##STR1## as well as to the use of these compounds in pharmaceutical compositions intended for use in human or veterinary medicine (dermatological, rheumatic, respiratory, cardiovascular and ophthalmological complaints in particular), or alternatively in cosmetic compositions.
An Improved Method for the Preparation of 1-Methyl-2-formyl-5-bromopyrrole
作者:Roderick Hai-Ying He、Xi-Kui Jiang
DOI:10.1039/a803388i
日期:——
1-Methyl-2-formyl-5-bromopyrrole 1 was prepared in 48% total yield by initial bromination of the intermediate 1-methyl-2-(5,5-dimethyl-1,3-dioxan-2-yl)pyrrole 5 with N-bromosuccinimide to give the intermediate 1-methyl-2-(5,5-dimethyl-1,3-dioxan-2-yl)-5-bromopyrrole 6, which was finally hydrolyzed to the product 1.