Nickel/Lewis acid dual catalysis is found to effect the carbocyanation reaction of alkynes using acetonitrile and substituted acetonitriles to give a range of variously substituted acrylonitriles. The addition of propionitrile across alkynes is also demonstrated briefly to give the corresponding ethylcyanation products in good yields, whereas the reaction of butyronitrile gives significant amounts of hydrocyanation products due possibly to β-hydride elimination of a propylnickel intermediate. The reaction of optically active α-phenylpropionitrile suggests a reaction mechanism that involves oxidative addition of a C–CN bond with retention of its absolute configuration.
[EN] PYRROLOPYRIDINONE COMPOUNDS AND METHODS FOR TREATING HIV<br/>[FR] COMPOSÉS PYRROLOPYRIDINONES ET MÉTHODES DE TRAITEMENT DU VIH
申请人:GLAXOSMITHKLINE LLC
公开号:WO2013043553A1
公开(公告)日:2013-03-28
Provided are compounds and pharmaceutically acceptable salts thereof, their pharmaceutical compositions, their methods of preparation, and their use for treating viral infections mediated by a member of the retrovirus family of viruses such as the Human Immunodeficiency Virus (HIV).
[EN] NEW TRPA1 ANTAGONISTS<br/>[FR] NOUVEAUX ANTAGONISTES DE TRPA1
申请人:ALMIRALL SA
公开号:WO2017060488A1
公开(公告)日:2017-04-13
The present invention relates to compounds of Formula (I), to the process for preparing such compounds and to their use in the treatment of a pathological condition or disease susceptible to amelioration by TRPA1 channel inhibition or antagonism.
Thioformamide derivatives of the formula (I) ##STR1## wherein R represents an alkyl group; A represents either: (1) a phenyl group which is optionally substituted; or (2) heteroaromatic group (e.g. pyrid-3-yl, quinolin-3-yl); Y represents: an ethylene or methylene group or a direct bond; and B represents either: a) a phenyl, pyridyl, furyl or thienyl group, each of which may be optionally substituted, or b) a straight- or branched-chain alkyl, alkenyl, or cycloalkyl group, each of which may be optionally substituted. These compounds may be formulated into pharmaceutical preparations and have utility in the treatment of disorders associated with smooth muscle contraction.
Bioorthogonal Tetrazine Carbamate Cleavage by Highly Reactive <i>trans</i>-Cyclooctene
作者:Arthur H. A. M. van Onzen、Ron M. Versteegen、Freek J. M. Hoeben、Ivo A. W. Filot、Raffaella Rossin、Tong Zhu、Jeremy Wu、Peter J. Hudson、Henk M. Janssen、Wolter ten Hoeve、Marc S. Robillard
DOI:10.1021/jacs.0c00531
日期:2020.6.24
allylic substituted trans-cyclooctene linker and a tetrazine activator has enabled exceptional control over chemical and biological processes. Here we report the development of a newbioorthogonal cleavage reaction based on trans-cyclooctene and tetrazine, which allows the use of highly reactive trans-cyclooctenes, leading to 3 orders of magnitude higher click rates compared to the parent reaction