Discovery of a Potent Pyrazolopyridine Series of γ-Secretase Modulators
摘要:
The synthesis and structure activity relationship of a novel series of pyrazolopyridines are reported. These compounds represent a new class of gamma-secretase modulators that demonstrate good in vitro potency in inhibiting A beta(42) production. Examples with statistically significant in vivo efficacy in reducing the production of rat cerebrospinal fluid A beta(42) were also identified.
Cat-1 inhibitors, pharmaceutical compositions and methods of use
申请人:Hoffman-La Roche Inc.
公开号:US05344843A1
公开(公告)日:1994-09-06
The invention relates to compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.2 ' X, Y, Z, A, B, Q and n are as described herein. Their pharmaceutically acceptable salts, and when appropriate, enantiomers, racemates, diastereomers or mixtures thereof or geometric isomer or mixtures thereof, and pharmaceutically acceptable salts thereof. The compounds of formula I inhibit enzyme carnitine acyltransferase 1 (CAT-1) and are therefore useful in the prevention of injury to ischemic tissue, and can limit infarct size, improve cardiac function and prevent arrhythmias during and following a myocardial infarction.
A general copper-catalyzed radical C(sp3)−C(sp2) cross-coupling to access 1,1-diarylalkanes under ambient conditions
作者:Xiao-Long Su、Sheng-Peng Jiang、Liu Ye、Guo-Xing Xu、Ji-Jun Chen、Qiang-Shuai Gu、Zhong-Liang Li、Xin-Yuan Liu
DOI:10.1016/j.tet.2021.132152
日期:2021.6
A general copper-catalyzedC(sp3)−C(sp2) cross-coupling of (hetero)benzyl bromides with the air- and moisture-stable aryl nucleophiles has been developed, providing a facile access to pharmaceutically useful 1,1-di(hetero)arylalkane and 1-aryl-1-heteroarylalkane scaffolds. Critical to the success is the utilization of a proline-based N,N,P-ligand to enhance the reducing capability of copper, thus easily
[EN] GAMMA SECRETASE MODULATORS<br/>[FR] MODULATEURS DE LA GAMMA SÉCRÉTASE
申请人:SCHERING CORP
公开号:WO2009073777A1
公开(公告)日:2009-06-11
This invention provides novel compounds that are modulators of gamma secretase. The compounds have the formula (I) wherein R2 is a fused bicyclic ring of the formula (II). Also disclosed are methods of modulating gamma secretase activity and methods of treating Alzheimer's disease using the compounds of formula (I).
This invention provides novel compounds that are modulators of gamma secretase. The compounds have the formula (I) wherein R
2
is a fused bicyclic ring of the formula (II). Also disclosed are methods of modulating gamma secretase activity and methods of treating Alzheimer's disease using the compounds of formula (I).
Selective, Transition Metal‐free 1,2‐Diboration of Alkyl Halides, Tosylates, and Alcohols
作者:Mingming Huang、Jiefeng Hu、Shasha Shi、Alexandra Friedrich、Johannes Krebs、Stephen A. Westcott、Udo Radius、Todd B. Marder
DOI:10.1002/chem.202200480
日期:2022.4.27
simple and efficient strategy to access alkyl 1,2-bis(boronate esters) via regio- and diastereoselective diboration of readily available secondary and tertiary alkylhalides (Br, Cl, I), tosylates, and alcohols was developed. The use of KI and DMA is critical to the methodology, which circumvents the regio- and diastereoselectivity problems. The transformation showed a broad substrate scope (75 examples)
开发了一种无过渡金属、简单且有效的策略,通过对容易获得的仲和叔烷基卤化物(Br、Cl、I)、甲苯磺酸酯和醇进行区域和非对映选择性二硼化来获得烷基 1,2-双(硼酸酯) 。 KI 和 DMA 的使用对该方法至关重要,它可以避免区域选择性和非对映选择性问题。该转化显示了广泛的底物范围(75 个实例)以及天然产物后期修饰的实用性。