Regioselective Synthesis of Substituted Carbazoles, Bicarbazoles, and Clausine C
作者:Gary L. Points、Christopher M. Beaudry
DOI:10.1021/acs.orglett.1c02449
日期:2021.9.3
Substituted carbazoles are efficiently constructed from 3-triflato-2-pyrones and alkynyl anilines. Multiple substituents are tolerated on the carbazole, and complete control of regiochemistry is observed. Complicated and sterically congested substitution patterns are produced. This strategy is also used to prepare substituted bicarbazoles and related biaryls. Finally, the method was showcased in a
取代咔唑由 3-triflato-2-pyrones 和炔基苯胺有效构建。咔唑上可耐受多个取代基,并观察到对区域化学的完全控制。产生了复杂且空间拥挤的替代模式。该策略也用于制备取代的联咔唑和相关联芳基。最后,该方法在咔唑天然产物 clausine C 的合成中得到展示。
Domino Process in Silver-Catalyzed Reactions of <i>N</i>-Arylformimidates and Active Methylene Compounds Involving Cycloisomerization and 1,3-Alkenyl Shift
作者:Chang Ho Oh、Swastik Karmakar、HyoSeung Park、YoungCheon Ahn、Jung Wook Kim
DOI:10.1021/ja9106226
日期:2010.2.17
3-disubstituted indoles from alkyne iminoethers 1 that employs a domino process involving Ag-catalyzed condensation followed by a tandem Ag-induced cycloisomerization and 1,3-alkenyl shift to Ag-activated carbon. This methodology can be useful in regioselectively constructing 3-alkylated indoles, which are part of the structures of biologically active compounds and important alkaloids.
An enantioselective consecutive cyclization/coupling process, catalyzed by palladium is reported. Stereoinduction arises from an enantioselective carbopalladation, generating an intermediate which promotes a nucleopalladation step. The dual cyclization sequence was compatible with a variety of alkyne-tethered oxygen- and nitrogen-centered nucleophiles, and a variety of alkenyl-tethered aryl iodides
INDOLE DERIVATIVES AS HISTAMINE 3 RECEPTOR INHIBITORS FOR THE TREATMENT OF COGNITIVE AND SLEEP DISORDERS, OBESITY AND OTHER CNS DISORDERS
申请人:Bennani Youssef L.
公开号:US20110059966A1
公开(公告)日:2011-03-10
This invention relates to compounds having pharmacological activity, to compositions containing these compounds, and to a method of treatment employing the compounds and compositions. More particularly, this invention concerns certain indole derivatives and their salts and solvates. These compounds have H
3
histamine receptor antagonist activity. This invention also relates to pharmaceutical compositions containing these compounds and to a method of treating disorders in which histamine H
3
receptor blockade is beneficial.