制备具有2-甲基,2-乙基,2-异丙基和2-叔丁基的噻吩和硫杂环戊烷衍生物,并通过各种立体选择性方法将其转化为顺式和反式亚硫亚胺和亚砜。顺式sulphilimines通过使用T-BuOCl和TsNH形成-在一个两阶段过程,而环状硫化物通过氯胺-T主要转化成反式- sulphilimines。通过不同的氧化方法获得了富含顺式和反式异构体的亚砜。通过hplc测量非对映异构产物分布,并通过13 C NMR光谱法确定非对映异构体的构型。通过分析13 C NMR和X射线数据确定了亚砜亚胺的优选构象。如图13所示在13 C NMR光谱中,亚硫亚胺和亚砜的构型是相似的。
制备具有2-甲基,2-乙基,2-异丙基和2-叔丁基的噻吩和硫杂环戊烷衍生物,并通过各种立体选择性方法将其转化为顺式和反式亚硫亚胺和亚砜。顺式sulphilimines通过使用T-BuOCl和TsNH形成-在一个两阶段过程,而环状硫化物通过氯胺-T主要转化成反式- sulphilimines。通过不同的氧化方法获得了富含顺式和反式异构体的亚砜。通过hplc测量非对映异构产物分布,并通过13 C NMR光谱法确定非对映异构体的构型。通过分析13 C NMR和X射线数据确定了亚砜亚胺的优选构象。如图13所示在13 C NMR光谱中,亚硫亚胺和亚砜的构型是相似的。
HETEROCYCLIC TRIAZOLE COMPOUNDS AS AGONISTS OF THE APJ RECEPTOR
申请人:AMGEN INC.
公开号:US20170320860A1
公开(公告)日:2017-11-09
Compounds of Formula I and Formula II, pharmaceutically acceptable salts thereof, stereoisomers of any of the foregoing, or mixtures thereof are agonists of the APJ Receptor and may have use in treating cardiovascular and other conditions. Compounds of Formula I and Formula II have the following structures:
where the definitions of the variables are provided herein.
E–H (E = R<sub>3</sub>Si or H) bond activation by B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub> and heteroarenes; competitive dehydrosilylation, hydrosilylation and hydrogenation
作者:Liam D. Curless、Ewan R. Clark、Jay J. Dunsford、Michael J. Ingleson
DOI:10.1039/c3cc47372d
日期:——
Addition of R3Si–H–B(C6F5)3 to heteroarenes leads to surprisingly complex and substrate dependent mixtures due to competing dehydrosilylation, hydrosilylation and hydrogenation.
VHR PROTEIN TYROSINE PHOSPHATASE INHIBITORS, COMPOSITIONS AND METHODS OF USE
申请人:Mustelin Tomas
公开号:US20090105254A1
公开(公告)日:2009-04-23
Disclosed herein are
Vaccinia
H1-related (VHR) protein tyrosine phosphatase (PTP) inhibitors that provide a method for treating cancer.
本文披露了一种可用于治疗癌症的天花H1相关(VHR)蛋白酪氨酸磷酸酶(PTP)抑制剂。
Compounds useful for treating neurodegenerative disorders
申请人:Bronk Brian Scott
公开号:US20130060020A1
公开(公告)日:2013-03-07
The present invention provides compounds of formula I:
or a pharmaceutically acceptable salt thereof, wherein R
x
is as defined and described herein, compositions thereof, and methods of using the same.
Novel Cysteine Protease Inhibitors and Uses Thereof
申请人:The Trustees of Columbia University in the city of New York
公开号:US20150045393A1
公开(公告)日:2015-02-12
The invention provides for novel cysteine protease inhibitors and compositions comprising novel cysteine protease derivatives. The invention further provides for methods for treatment of neurodegenerative diseases comprising administration novel cysteine protease inhibitors or compositions comprising novel cysteine protease inhibitors. In some embodiments, the cysteine protease inhibitors are calpain inhibitors.