SUBSTITUTED IMIDAZOLECARBOXYLATE DERIVATIVES AND THE USE THEREOF
申请人:CHENGDU MFS PHARMA. CO., LTD.
公开号:US20200369621A1
公开(公告)日:2020-11-26
A compound is shown in formula (I). The derivatives of the compound include a stereoisomer, a pharmaceutically acceptable salt, a solvate, a prodrug, a metabolite, a deuterated derivative. The compound is a structurally novel substituted imidazole formate derivative. Substituted imidazole formate derivatives are used in preparing a drug with sedative, hypnotic and/or anesthetic effects, as well as a drug that can control the state of epilepsy. The compound has a good inhibitory effect on the central nervous system, and provides a new option for clinical screening of and/or preparation of a drug with sedative, hypnotic and/or anesthetic effects and controlling the state of epilepsy.
Efficient Synthesis of 3-Chloromethyl-2(5<i>H</i>)-furanones and 3-Chloromethyl- 5,6-dihydropyran-2-ones via the PdCl<sub>2</sub>-Catalyzed Chlorocyclocarbonylation of 2,3- or 3,4-Allenols
作者:Xin Cheng、Xuefeng Jiang、Yihua Yu、Shengming Ma
DOI:10.1021/jo8015677
日期:2008.11.21
was formed between the center carbon atom of the allene moiety and the hydroxyl oxygen, which was established by the X-ray single crystal diffraction study of gamma-lactone 3p. The highly opticallyactive 3-chloromethyl-2(5H)-furanones could be easily prepared from the readily available opticallyactive 2,3-allenols. A mechanism for this reaction was proposed.
Palladium-catalysed coupling reaction of allenic alcohols with aryl- and alkenylboronic acids
作者:Masahiro Yoshida、Takahiro Gotou、Masataka Ihara
DOI:10.1039/b402047b
日期:——
The direct coupling of aryl- and alkenylboronic acids with allenic alcohols has been achieved using a palladium catalyst to yield various substituted dienes and trienes in high yields.
A novel rearrangement of tertiary α-allenic alcohol carbamates. Preparation of 2-O-carbamoyl-4,4-disubstituted-1,3-butadienes
作者:Richard W. Friesen、Aleksandra E. Kolaczewska、Nina Khazanovich
DOI:10.1016/s0040-4039(00)61758-6
日期:1992.11
Treatment of a variety of tertiary α-allenic alcohols with N-tosyl isocyanate results in a facile and novel rearrangement reaction that provides isolable 2-O-carbamoyl-4,4-disubstituted-1,3-butadienes in a stereoselective manner.
Cobalt‐Catalyzed C8‐Dienylation of Quinoline‐
<i>N</i>
‐Oxides
作者:Rahul K. Shukla、Akshay M. Nair、Salman Khan、Chandra M. R. Volla
DOI:10.1002/anie.202003216
日期:2020.9.21
An efficient Cp*CoIII‐catalyzed C8‐dienylation of quinoline‐N‐oxides was achieved by employing allenes bearing leaving groups at the α‐position as the dienylating agents. The reaction proceeds by CoIII‐catalyzed C−H activation of quinoline‐N‐oxides and regioselective migratory insertion of the allene followed by a β‐oxy elimination, leading to overall dienylation. Site‐selective C−H activation was
喹啉N-氧化物的有效Cp * Co III催化C8-二烯基化反应是通过使用在α-位带有离去基团的烯作为二烯化剂来实现的。该反应通过Co III催化喹啉N氧化物的CH H活化和丙二烯的区域选择性迁移插入,然后被β氧基消除而进行,从而导致整体二烯化。在温和的反应条件下,以优异的选择性实现了位点选择性的CH活化,并且发现30 mol%的NaF添加剂对于有效的二烯基化至关重要。该方法具有高立体选择性,温和的反应条件和良好的官能团耐受性。喹啉N的C8烯基化在没有离开基团作为偶联配偶体的丙二烯的情况下实现了氧化。此外,进行了克级制备和初步的机理实验,以深入了解反应机理。