Method of preparing inhibitors of phosphodiesterase-4
申请人:——
公开号:US20040102472A1
公开(公告)日:2004-05-27
In one aspect, the present invention is directed to a one pot method of preparing intermediates of Formula V, which are useful in making inhibitors of phosphodiesterase-4:
1
The present invention is also directed to a method of preparing phosphodiesterase inhibitors comprising the Formula
2
Transition Metal-Free TEMPO-Catalyzed Oxidative Cross- Coupling of Nitrones with Alkynyl-Grignard Reagents
作者:Sandip Murarka、Armido Studer
DOI:10.1002/adsc.201100327
日期:2011.10
cross-coupling of nitrones and alkynyl-magnesium compounds using a catalytic amount of 2,2,6,6-tetramethylpiperidine-N-oxyl radical (TEMPO) as an environmentally benign organic oxidant and dioxygen as terminal oxidant is described. These coupling reactions can be performed without adding any transition metal on various N-tert-butylnitrones and alkynyl-Grignardreagents. Moreover, the alkynylated nitrone products
Fatty Acid Cysteine-Based Conjugates and Their Use in Treating Medical Disorders
申请人:Catabasis Pharmaceuticals, Inc.
公开号:US20170342046A1
公开(公告)日:2017-11-30
The invention relates to fatty acid cysteine-based conjugates, compositions comprising a fatty acid cysteine-based conjugates, and methods for using such conjugates and compositions to treat disease, such as a disease caused by dysregulation of autophagy or mitochondrial bioenergetics.
A convenient, “one-pot” synthesis of trisubstituted pyrroles via a Ru(II)-catalyzed, Cu(II)-mediated reaction of substituted isoxazoles with sulfonylhydrazones has been developed. A series of highly functionalized pyrroles are obtained via a synergistic formation of new C−C and C−N bonds. Mechanistic investigations were carried out to propose the plausible pathway. This protocol provides a facile and
通过Ru( II ) 催化的、Cu( II ) 介导的取代异恶唑与磺酰腙的反应,一种方便的“一锅法”合成三取代吡咯得到了开发。通过新的 C-C 和 C-N 键的协同形成,获得了一系列高度功能化的吡咯。进行了机制研究以提出合理的途径。该协议为合成各种带有吡咯骨架的杂环化合物提供了一种简便快捷的方法。
Complementary regioselective synthesis of 3,5-disubstituted isoxazoles from ynones
作者:Xiaochen Liu、Dongsub Hong、Zhigang She、William H. Hersh、Barney Yoo、Yu Chen
DOI:10.1016/j.tet.2018.09.043
日期:2018.11
dehydration. The two routes are not only both highly regioselective, but also complementary to each other as a pair of regioisomeric 3,5-disubstituted isoxazoles are readily prepared from one single ynone substrate. The efficiency of the two routes are further evaluated and demonstrated in the synthesis of three representative 3,5-disubstituted isoxazoles.