A New Ring-Forming Methodology for the Synthesis of Conformationally Constrained Bioactive Molecules
作者:Demetris P. Papahatjis、Spyros Nikas、Andrew Tsotinis、Margarita Vlachou、Alexandros Makriyannis
DOI:10.1246/cl.2001.192
日期:2001.3
A new, general, one pot method for introducing carbocyclic rings alpha to a nitrile moiety is described. Treatment of readily available arylacetonitriles with potassium bis(trimethylsilyl)amide and subsequent alkylation with α, ω-dibromo or dichloroalkanes in tetrahydrofuran under anhydrous conditions at 0 °C produces cycloalkyl adducts in good yields and short reaction times.
描述了一种新的通用一锅法,用于在腈基前引入碳环。将 readily available 的芳基乙腈与氨基钾双(trimethylsilyl)处理,随后在无水条件下于0 °C的四氢呋喃中与α,ω-二溴或二氯烷烃进行烷基化,可以在短反应时间内以良好的产率生成环烷基附加物。
C1‘-Cycloalkyl Side Chain Pharmacophore in Tetrahydrocannabinols
作者:Demetris P. Papahatjis、Victoria R. Nahmias、Spyros P. Nikas、Thanos Andreou、Shakiru O. Alapafuja、Andrew Tsotinis、Jianxin Guo、Pusheng Fan、Alexandros Makriyannis
DOI:10.1021/jm070121a
日期:2007.8.1
In earlier work we have provided evidence for the presence of a subsite within the CB1 and CB2 cannabinoid receptor binding domains of classical cannabinoids. This putative subsite corresponds to substituents on the C1'-position of the C3-alkyl side chain, a key pharmacophoric feature in this class of compounds. We have now refined this work through the synthesis of additional C1'-cycloalkyl compounds using newly developed approaches. Our findings indicate that the C1'-cyclopropyl and C1'-cyclopentyl groups are optimal pharmacophores for both receptors while the C1'-cyclobutyl group interacts optimally with CB1 but not with CB2. The C1'-cyclohexyl analogs have reduced affinities for both CB1 and CB2. However, these affinities are significantly improved with the introduction of a C2'-C3' cis double bond that modifies the available conformational space within the side chain and allows for a better accommodation of a six-membered ring within the side chain subsite. Our SAR results are highlighted by molecular modeling of key analogs.
US4859232A
申请人:——
公开号:US4859232A
公开(公告)日:1989-08-22
Discovery of a CB2 and 5-HT1A receptor dual agonist for the treatment of depression and anxiety
Cannabinoid CB2R agonists have gained considerable attention as potential novel therapies for psychiatric disorders due to their non-psychoactive nature, in contrast to CB1R agonists. In this study, we employed molecular docking to design and synthesize 23 derivatives of cannabidiol (CBD) with the aim of discovering potent CB2R agonists rather than CB2R antagonists or inverse agonists. Structure-activity
与 CB 1 R 激动剂相比,大麻素 CB 2 R 激动剂由于其非精神活性性质,作为精神疾病的潜在新疗法而受到广泛关注。在本研究中,我们采用分子对接设计并合成了23种大麻二酚(CBD)衍生物,目的是发现有效的CB 2 R激动剂而不是CB 2 R拮抗剂或反向激动剂。构效关系 (SAR) 研究强调了 C-3' 位点的酰胺基团和 C-4' 位点的环烷基对于 CB 2 R 活化的至关重要性。有趣的是,三种 CBD 衍生物,即2o 、 6g和6h ,对 CB 2受体表现出显着的部分激动活性,这与 CBD 的反向激动特性相反。其中, 2o作为 CB 2 R 和 5-HT 1A R 双重激动剂,尽管对 CB 1 R 具有一些不需要的拮抗剂活性。它表现出显着的 CB 2 R 部分激动作用,同时保持 5-HT 1A R 激动水平和CB 1 R 拮抗活性与 CBD 类似。药代动力学实验证实2o具有良好的药代动力学特性。行为研究进一步表明,