[EN] UREA DERIVATIVES AS CB1 ALLOSTERIC MODULATORS<br/>[FR] DÉRIVÉS D'URÉE UTILISÉE EN TANT QUE MODULATEURS ALLOSTÉRIQUES DE CB1
申请人:RTI INT
公开号:WO2020264176A1
公开(公告)日:2020-12-30
Heteroaryl and aliphatic analogs of diarylurea-based cannabinoid 1 receptor (CB1 R) allosteric modulators of formula (I) are described. Exemplary analogs can provide improved potencies and pharmacokinetic properties. Methods of using the analogs to treat diseases mediated by CB1 R, such as substance abuse and obesity are described.
The directarylation of activated thiophenes was accomplished in moderate to good yields using a Heck-type reaction with the mixture of Pd(OAc)2 and n-Bu4NBr as a catalyticsystem. This new arylation method is applied to different derivatives and has proved to be compatible with sensitive functional groups. Furthermore, the substituent nature and position on the thiophene moiety influence the cross
使用Heck型反应,将Pd(OAc)2和n- Bu 4 NBr的混合物作为催化体系,可以中等至良好的产率完成活化噻吩的直接芳基化反应。这种新的芳基化方法适用于不同的衍生物,并已证明与敏感的官能团兼容。此外,噻吩部分上的取代基性质和位置影响交叉偶联。特别是当杂环在第2位被吸电子基团取代时,该取代是区域特异性的。
Synthesis of 2-Nitrothiophenes <i>via</i>
Tandem Henry Reaction and Nucleophilic Substitution on Sulfur from β-Thiocyanatopropenals
作者:Lin Rong、Yingxia Shen、Guoxi Xiong、Yuefa Gong
DOI:10.1002/jhet.3446
日期:2019.2
A new synthetic route of 2‐nitrothiophenes was described through a tetra‐n‐butylammonium fluoride‐promoted or diisopropylethylamine‐promoted tandem Henry reaction and nucleophilicsubstitution of nitromethane with 3‐thiocyanatopropenals, which were conveniently prepared by the replacement reaction of 3‐chloropropenals with potassium thiocyanate under a mild acidic condition.
Directthiophenearylation using a Heck-type reaction with as catalytic system is reported. Reactions with 2- and 3-substituted thiophenes have shown that substituent nature and position influence the cross-coupling. In particular, the substitution is regiospecific when the heterocycle is 2-substituted with an electron withdrawing group.