The Direct Conversion of α-Hydroxyketones to Alkynes
作者:Francesca Ghiringhelli、Lukas Nattmann、Sabine Bognar、Manuel van Gemmeren
DOI:10.1021/acs.joc.8b02941
日期:2019.1.18
Alkynes are highly important functional groups in organic chemistry, both as part of target structures and as versatile synthetic intermediates. In this study, a protocol for the directconversion of α-hydroxyketones to alkynes is reported. In combination with the variety of synthetic methods that generate the required starting materials by forming the central C–C bond, it enables a highly versatile
[EN] SUBSTITUTED ALKYNYLENE COMPOUNDS AS ANTICANCER AGENTS<br/>[FR] COMPOSÉS ALCYNYLÈNE SUBSTITUÉS EN TANT QU'AGENTS ANTICANCÉREUX
申请人:AURIGENE DISCOVERY TECH LTD
公开号:WO2019142126A1
公开(公告)日:2019-07-25
The present invention relates to substituted alkynylene compounds represented by compound of formula (I) pharmaceutically acceptable salts and stereoisomers thereof. The present invention further provides the methods of preparation of compound of formula (I) and therapeutic uses thereof as anti-cancer agents.
Visible light promoted coupling of alkynyl bromides and Hantzsch esters for the synthesis of internal alkynes
作者:Zhi-Yong Song、Chun-Lin Zhang、Song Ye
DOI:10.1039/c8ob02912a
日期:——
A metal-free visible light promoted C(sp3)–C(sp) coupling reaction of alkynyl bromides and Hantzsch esters was developed, giving internal alkynes with primary, secondary, tertiary alkyl or other functional groups in good to high yields.
This disclosure relates to new compounds that may be used to modulate a histamine receptor in an individual. Novel compounds are described, including new bridged heterocyclic [4,3-b]indole compounds. Pharmaceutical compositions are also provided. Pharmaceutical compositions comprising the compounds are also provided, as are methods of using the compounds in a variety of therapeutic applications, including the treatment of a cognitive disorder, psychotic disorder, neurotransmitter-mediated disorder and/or a neuronal disorder.
Alkylboronic acids as alkylating agents: photoredox-catalyzed alkylation reactions assisted by K<sub>3</sub>PO<sub>4</sub>
作者:Fuyang Yue、Henan Ma、Hongjian Song、Yuxiu Liu、Jianyang Dong、Qingmin Wang
DOI:10.1039/d2sc05521j
日期:——
alkylboronic acids in organic synthesis, their utility as alkyl radical precursors in visible-light-induced photocatalytic reactions is limited by their high oxidation potentials. In this study, we demonstrated that an inorganophosphorus compound can modulate the oxidation potentials of alkylboronic acids so that they can act as alkyl radical precursors. We propose a mechanism based on the results of fluorescence
尽管烷基硼酸在有机合成中无处不在,但它们在可见光诱导的光催化反应中作为烷基自由基前体的用途受到其高氧化电位的限制。在这项研究中,我们证明了一种无机磷化合物可以调节烷基硼酸的氧化电位,使其可以作为烷基自由基前体。我们根据荧光猝灭实验、电化学实验、 11 B 和31的结果提出了一种机制P NMR 光谱和其他技术。此外,我们描述了一种简单可靠的烷基化方法,该方法具有良好的官能团耐受性,可用于直接 C-B 氯化、氰化、乙烯基化、炔基化和烯丙基化,以及衍生药物分子的后期功能化。值得注意的是,烷基硼酸可以在硼频哪醇酯的存在下被选择性地激活。