PYRROLOPYRAZINE-SPIROCYCLIC PIPERIDINE AMIDES AS MODULATORS OF ION CHANNELS
申请人:Hadida Ruah Sara Sabina
公开号:US20120196869A1
公开(公告)日:2012-08-02
The invention relates to pyrrolopyrazine-spirocyclic piperidine amide compounds useful as inhibitors of ion channels. The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.
A copper-catalyzed [2 + 3] formal cyclization reaction between α-hydroxyl ketones and arylacetonitriles has been developed. The reaction outcome was ultimately dependent on the structure of the α-hydroxy ketones employed. Tertiary α-hydroxy ketones gave 3,4,5,5-tetrasubstituted butenolides as the sole products, while secondary α-hydroxy ketones furnished 2,4,5-trisubstituted oxazoles selectively. This
Metal-Free Oxidative Decarboxylative Acylation/Ring Expansion of Vinylcyclobutanols with<i>α</i>-Keto Acids by Visible Light Photoredox Catalysis
作者:Jin-Jiang Zhang、Yuan-Bo Cheng、Xin-Hua Duan
DOI:10.1002/cjoc.201600729
日期:2017.3
A metal‐free visible‐light‐mediated decarboxylative acylation/ring expansion of vinylcyclobutanols with α‐keto acids has been developed. Hypervalent iodine reagent was found to be important for promoting decarboxylation of α‐keto acids in this tandem radical process. This protocol has been successfully applied to synthesis of a variety of substituted 1,4‐dicarbonyl compounds and tolerated some functional
Highly Efficient CH Hydroxylation of Carbonyl Compounds with Oxygen under Mild Conditions
作者:Yu-Feng Liang、Ning Jiao
DOI:10.1002/anie.201308698
日期:2014.1.7
A transition‐metal‐free Cs2CO3‐catalyzed α‐hydroxylation of carbonylcompounds with O2 as the oxygen source is described. This reaction provides an efficient approach to tertiary α‐hydroxycarbonyl compounds, which are highly valued chemicals and widely used in the chemical and pharmaceutical industry. The simple conditions and the use of molecular oxygen as both the oxidant and the oxygen source make
描述了无过渡金属的Cs 2 CO 3催化的羰基化合物的α-羟基化,其中O 2为氧源。该反应为叔α-羟基羰基化合物提供了一种有效的方法,这些叔α-羟基羰基化合物是极有价值的化学物质,广泛用于化学和制药行业。简单的条件和使用分子氧作为氧化剂和氧源使该协议非常环保和实用。此转换是高效的,并且对叔C(sp 3)H键裂解具有高度选择性。