Synthesis and pharmacology of 1-deoxy analogs of CP-47,497 and CP-55,940
摘要:
A series of 1-deoxy analogs of CP-47,497 (8 and 13, n = 0-7) and 1-deoxy analogs of CP-55,940 (9, n = 0-7) have been synthesized and their affinities for the cannabinoid CB1 and CB2 receptors have been determined. Although the majority of these compounds exhibit selectivity for the CB2 receptor, none have greater than modest affinity for either receptor. The interactions of these 1-deoxy nontraditional cannabinoids with the CB2 receptor are discussed. (c) 2007 Elsevier Ltd. All rights reserved.
1,4-Addition of aryl boronic acids to α,β-unsaturated ketones catalyzed by a CCC–NHC pincer rhodium complex
作者:Sean W. Reilly、Hannah K. Box、Glenn R. Kuchenbeiser、Ramel J. Rubio、Christopher S. Letko、Kandarpa D. Cousineau、T. Keith Hollis
DOI:10.1016/j.tetlet.2014.09.107
日期:2014.12
An air- and water-stable CCC–NHC pincer Rh complex catalyzed the 1,4-addition of aryl boronic acids to α,β-unsaturated ketones and aldehydes. This bench top method proceeds in eco-friendly solvents including methanol and water. The scope of boronic acids was expanded to include heterocyclic examples.
Treatment of 1-aryl-2,5-diphenylpyrroles with lithium powder in tetrahydrofuran at 0 °C results in the generation of the corresponding aryllithium reagents through reductive C–N bond cleavage.
Palladium-Catalyzed Direct β-C−H Arylation of Ketones with Arylboronic Acids in Water
作者:Xiaoyun Hu、Xiaobo Yang、Xi-Jie Dai、Chao-Jun Li
DOI:10.1002/adsc.201700277
日期:2017.7.17
A palladium‐catalyzed direct β‐C−H arylation of ketones was developed under mild conditions in water, featuring commercially available arylboronic acids as nucleophilic aryl sources and o‐iodoxybenzoic acid as the oxidant. The method provides a concise route to access β‐arylated ketones. Preliminary studies indicated that direct asymmetric β‐C−H arylation of ketones could be achieved by this strategy
Disclosed herein are compounds of formula (I) or pharmaceutically acceptable salts, solvates, or combinations thereof,
wherein X1, X2, X3, X4, J, K, L, X5, X6, Rb, G2, and m are defined in the specification. Compositions comprising such compounds and methods for treating conditions and disorders using such compounds and compositions are also disclosed.
A Tandem Dehydrogenation‐Driven Cross‐Coupling between Cyclohexanones and Primary Amines for Construction of Benzoxazoles
作者:Biping Xu、Weiping Su
DOI:10.1002/anie.202203365
日期:2022.7.25
A tandem dehydrogenation-driven cross-coupling reactionbetweencyclohexanones and primary amines is reported for benzoxazole synthesis by TEMPO's multiple reactivity modes (oxygenation and desaturation). This transition metal-free protocol features broad substrate scope, high functional group tolerance, and is operationally simple, therefore enabling late-stage functionalization and rapid synthesis
据报道,通过 TEMPO 的多种反应模式(氧化和去饱和)合成苯并恶唑,环己酮和伯胺之间的串联脱氢驱动的交叉偶联反应。这种无过渡金属方案具有广泛的底物范围、高官能团耐受性和操作简单,因此能够实现生物活性化合物的后期功能化和快速合成,包括结构复杂的上市药物和天然产物。