ACONITINE COMPOUNDS, COMPOSITIONS, USES, AND PREPARATION THEREOF
申请人:Bois Justin Du
公开号:US20120238526A1
公开(公告)日:2012-09-20
Compound derivatives of aconitine are provided, in particular derivatives that modulate the activity of sodium channels. Also provided are pharmaceutical compositions comprising compounds of the invention and a pharmaceutically acceptable carrier. The subject compounds are useful in treatments, including treatments to modulate neuronal activity or to bring about muscular relaxation. The compounds also find use in the treatment of subjects suffering from a voltage-gated sodium channel-enhanced ailment or from pain. Further methods are provided for the preparation of the aconitine derivatives.
heterocycles has been realized via C(sp3)‐centered radical C(sp2)−C(sp3) bond formation under oxidant‐free conditions at room temperature. This reaction readily incorporates various functional alkyl groups into heterocyclic compounds without observation of any alkyl radicalrearrangement and represents a mild and general tool for the preparation of valuable alkyl group‐functionalized heterocyclic compounds.
Visible-Light-Induced Regioselective Alkylation of Coumarins via Decarboxylative Coupling with <i>N</i>-Hydroxyphthalimide Esters
作者:Can Jin、Zhiyang Yan、Bin Sun、Jin Yang
DOI:10.1021/acs.orglett.9b00327
日期:2019.4.5
An efficient photocatalytic decarboxylative 3-position alkylation of coumarins by using alkyl N-hydroxyphthalimide esters as alkylationreagents has been developed. A variety of NHP esters derived from aliphatic carboxylicacids (primary, secondary, and tertiary) has been proved to be tolerated for this decarboxylation process, affording a broad scope of 3-alkylated coumarin derivatives in moderate
method for selective C-3 alkylation of coumarinsusing carboxylic acids as alkyl sources is reported. This process offers a practical method for the facile construction of 3-alkyl coumarins with a broad substrate scope. The reaction works under metal-free and aqueous media and both cyclic and acyclic aliphatic carboxylic acids participate in this radical C–C cross coupling reaction.
Visible‐Light‐Induced Regioselective Deaminative Alkylation of Coumarins via Photoredox Catalysis
作者:Maoling Tao、An‐Jun Wang、Peng Guo、Weipiao Li、Liang Zhao、Jie Tong、Haoyang Wang、Yanbo Yu、Chun‐Yang He
DOI:10.1002/adsc.202100940
日期:2022.1.4
3-Alkylated coumarins have many applications in medicinal chemistry, however, methods access to such structures are still limited. Herein, we report a site-selective photocatalytic deaminative alkylation of coumarins utilizing pyridinium-activated aliphatic primary amines as alkylation reagents. The protocol was highlighted by its mild reaction conditions, operational simplicity, and broad functional