Compounds, isomer thereof, or pharmaceutically acceptable salts thereof as vanilloid receptor antagonist; and pharmaceutical compositions containing the same
One-Pot Synthesis of Spirocyclopenta[<i>a</i>]indene Derivatives via a Cascade Ring Expansion and Intramolecular Friedel–Crafts-Type Cyclization
作者:Quanzhe Li、Jiaxin Liu、Yin Wei、Min Shi
DOI:10.1021/acs.joc.9b03126
日期:2020.2.21
A one-pot efficient synthetic approach for the rapid construction of spirocyclopenta[a]indene derivatives has been developed via an iodine-initiated cascade ring expansion and intramolecular Friedel-Crafts-type cyclization from propargyl alcohol-tethered alkylidenecyclobutanes under mild conditions with broad substrate scope. This cascade process can be elegantly conducted on a gram scale. A plausible
Lewis or Brønsted acid-catalysed reaction of propargylic alcohol-tethered alkylidenecyclopropanes with indoles and pyrroles for the preparation of polycyclic compounds tethered with indole or pyrrole motif
作者:Hao-Zhao Wei、Liu-Zhu Yu、Min Shi
DOI:10.1039/c9ob02211b
日期:——
derivatives via the Lewis or Brønsted acid catalysed cascade nucleophilic addition, electronic cyclization, ring-opening rearrangement of propargylic alcohol-tethered alkylidenecyclopropanes with indole and pyrrole derivatives. The reaction exhibited a broad substrate scope and good functional group tolerance under metal-free conditions, affording the desired products in moderate to good yields.
我们开发了一种简便的合成方法,该方法可通过路易斯或布朗斯台德酸催化的级联亲核加成,电子环化,带有炔丙基和吡咯衍生物的炔丙醇系链亚烷基环丙烷的开环重排来访问环戊五烯[ b ]萘衍生物。该反应在无金属的条件下表现出宽泛的底物范围和良好的官能团耐受性,以中等至良好的产率提供了所需的产物。
Rapid construction of cyclopenta[<i>b</i>]naphthalene frameworks from propargylic alcohol tethered methylenecyclopropanes
作者:Hao-Zhao Wei、Quan-Zhe Li、Yin Wei、Min Shi
DOI:10.1039/d0ob01732a
日期:——
We have developed a new synthetic methodology for the rapidconstruction of cyclopenta[b]naphthalene frameworks from the reaction of propargylic alcohol tethered methylenecyclopropanes with mesyl chloride in the presence of triethylamine through cascade cyclization. The reaction can be performed under mild conditions without the use of transition metals, affording the target products in moderate to
我们已经开发了一种新的合成方法,可以通过在三乙胺存在下通过级联环化反应,将炔丙醇系链的亚甲基环丙烷与甲磺酰氯反应,快速构建环戊[ b ]萘骨架。该反应可以在温和的条件下进行而无需使用过渡金属,以中等至良好的收率提供目标产物,并且该环化反应过程可以按比例放大至克级合成。
Catalytic Asymmetric Synthesis of Atropisomeric Quinolines through the Friedländer Reaction
catalyzed atroposelective Friedlander reaction was developed in which acetylacetone and a variety of 2′-substituted 2-aminobenzophenones were successfully employed to give optically active biaryl quinolines in good yields and with high enantioselectivities.
Asymmetric Synthesis of Hydroquinazolines Bearing C4-Tetrasubstituted Stereocenters via Kinetic Resolution of α-Tertiary Amines
作者:Qianwen Jiang、Tianren Qin、Xiaoyu Yang
DOI:10.1021/acs.orglett.1c04039
日期:2022.1.21
A novel protocol for asymmetricsynthesis of hydroquinazolines bearing C4-tetrasubstituted stereocenters has been achieved through kineticresolution of 2-amido α-tertiary benzylamines via chiral phosphoric acid catalyzed intramolecular dehydrative cyclizations. This method gave access to both α-tertiary benzylamines and hydroquinazolines with broad scope and high enantioselectivities. An intriguing