Xanthate-Mediated Incorporation of Quaternary Centers into Heteroarenes
摘要:
The xanthate-mediated addition of tertiary alkyl radicals to heteroarenes enabled the easy functionalization of heteroaromatic rings as well as more decorated structures, such as marketed drugs or agrochemicals. This work provides a synthetic tool for efficiently exploring the chemical space by allowing late-stage diversification with a high tolerance toward functional groups.
A Practical Route to Cyclobutanols and Fluorocyclobutanes
作者:Vincent L. Revil‐Baudard、Samir Z. Zard
DOI:10.1002/hlca.202100106
日期:2021.9
1-[(Ethoxycarbonothioyl)sulfanyl]cyclobutyl acetate (xanthate 7) was found to add to electronically unbiased alkenes and to certain heteroarenes. In the latter case, this corresponds to a variant of the Minisci reaction and allows the late-stage modification of biologically active substances. Saponification of the acetate furnishes the corresponding cyclobutanols, which, in the case of the nicotine
This invention relates to compounds of formula I
their use as positive allosteric modulators of mGlu5 receptor activity, pharmaceutical compositions containing the same, and methods of using the same as agents for treatment and/or prevention of neurological and psychiatric disorders associated with glutamate dysfunction such as schizophrenia or cognitive decline such as dementia or cognitive impairment. A, B, Ar, R
1
, R
2
, R
3
have meanings given in the description.
Base-Controlled Completely Selective Linear or Branched Rhodium(I)-Catalyzed C−H <i>ortho</i>
-Alkylation of Azines without Preactivation
作者:Gaël Tran、Kevin D. Hesp、Vincent Mascitti、Jonathan A. Ellman
DOI:10.1002/anie.201702409
日期:2017.5.15
A [RhI]/bisphosphine/base catalytic system for the ortho‐selectiveC−H alkylation of azines by acrylates and acrylamides is reported. This catalytic system features an unprecedented complete linear or branched selectivity that is solely dependent on the catalytic base that is used. Complete branched selectivity is even achieved for ethyl methacrylate, which enables the introduction of a quaternary
据报道,[Rh I ] /双膦/碱催化体系可通过丙烯酸酯和丙烯酰胺对嗪进行邻位选择性C H烷基化。该催化体系具有前所未有的完全线性或支化选择性,这完全取决于所使用的催化碱。甲基丙烯酸乙酯甚至可以实现完全支化的选择性,从而可以引入季碳中心。对于直链和支链烷基化都表现出优异的官能团相容性。这种转化的操作简便性和广泛范围使其可以快速获得具有直接制药和农用化学相关性的功能化杂志。
[EN] CONDENSED SUBSTITUTED HYDROPYRROLES AS ANTAGONISTS OF THE MUSCARINIC ACETYLCHOLINE RECEPTOR M4<br/>[FR] HYDROPYRROLES SUBSTITUÉS CONDENSÉS UTILISÉS EN TANT QU'ANTAGONISTES DU RÉCEPTEUR MUSCARINIQUE M4 DE L'ACÉTYLCHOLINE
申请人:UNIV VANDERBILT
公开号:WO2021216949A1
公开(公告)日:2021-10-28
Disclosed herein are substituted hexahydro-1H-cyclopenta[c]pyrrole compounds, which may be useful as antagonists of the muscarinic acetylcholine receptor M4 (mAChR M4). Also disclosed herein are methods of making the compounds, pharmaceutical compositions comprising the compounds, and methods of treating disorders using the compounds and compositions.
[EN] PIPERAZINE METABOTROPIC GLUTAMATE RECEPTOR 5 (MGLUR5) NEGATIVE ALLOSTERIC MODULATORS FOR ANXIETY/DEPRESSION<br/>[FR] PIPÉRAZINE UTILISÉE EN TANT QUE MODULATEURS ALLOSTÉRIQUES NÉGATIFS AGISSANT SUR LE RÉCEPTEUR MÉTABOTROPIQUE DU GLUTAMATE DE TYPE 5 (MGLUR5)
申请人:WYETH CORP
公开号:WO2009143404A1
公开(公告)日:2009-11-26
The present teachings relate to piperazine metabotropic glutamate receptor 5 (mGluR5) negative allosteric modulators having Formula (I); wherein the constituent variables are as defined herein. The present teachings further relate to methods for the preparation of the compounds, and to methods for using the compounds for treatment of diseases and disorders including schizophrenia, paranoia, depression, manic-depressive illness and anxiety.