带有N-苯基马来酰亚胺的2-(1'-环烯基)噻吩和2-(1'-环烯基)苯并[ b ]噻吩的Diels-Alder / Ene反应性:环烯环大小对苯并噻吩和二苯并噻吩产物分布的作用
摘要:
噻吩和苯并噻吩的支架是自然界中发现的丰富的生物活性化合物的重要类别。2-(1'-环烯基)噻吩和2-(1'-环烯基)苯并[ b ]噻吩的Diels-Alder反应具有在五个,六个,七个,八个和十二个烷基中存在的烯基N取代的成员环-苯基马来酰亚胺被表征。环烯环的大小在决定预期的和异构化的Diels-Alder加合物的产物分布中起着至关重要的作用。2D NMR研究表明,具有五,六和七元环的2-(1'-环烯基)噻吩的分离的异构体是芳构化的苯并噻吩产物,而八和十二元环是未重排的加合物。另外,对于五元和六元环的情况,分离出随后的与N-苯基马来酰亚胺的烯反应的产物。有趣的是,在2-(1'-环烯基)苯并[ b具有五元,六元,七元,八元和十二元环的]噻吩,在任何情况下均未分离未重排的二苯并噻吩Diels-Alder加合物。进行分子力学和密度泛函理论(M06-2X和PBE0-D3)的计算是为了了解各种二烯对于
带有N-苯基马来酰亚胺的2-(1'-环烯基)噻吩和2-(1'-环烯基)苯并[ b ]噻吩的Diels-Alder / Ene反应性:环烯环大小对苯并噻吩和二苯并噻吩产物分布的作用
摘要:
噻吩和苯并噻吩的支架是自然界中发现的丰富的生物活性化合物的重要类别。2-(1'-环烯基)噻吩和2-(1'-环烯基)苯并[ b ]噻吩的Diels-Alder反应具有在五个,六个,七个,八个和十二个烷基中存在的烯基N取代的成员环-苯基马来酰亚胺被表征。环烯环的大小在决定预期的和异构化的Diels-Alder加合物的产物分布中起着至关重要的作用。2D NMR研究表明,具有五,六和七元环的2-(1'-环烯基)噻吩的分离的异构体是芳构化的苯并噻吩产物,而八和十二元环是未重排的加合物。另外,对于五元和六元环的情况,分离出随后的与N-苯基马来酰亚胺的烯反应的产物。有趣的是,在2-(1'-环烯基)苯并[ b具有五元,六元,七元,八元和十二元环的]噻吩,在任何情况下均未分离未重排的二苯并噻吩Diels-Alder加合物。进行分子力学和密度泛函理论(M06-2X和PBE0-D3)的计算是为了了解各种二烯对于
1-[1-(2-Benzo[<i>b</i>]thiopheneyl)cyclohexyl]piperidine Hydrochloride (BTCP) Yields Two Active Primary Metabolites in Vitro: Synthesis, Identification from Rat Liver Microsome Extracts, and Affinity for the Neuronal Dopamine Transporter
1-[1-(2-Benzo[b]thiopheneyl)cyclohexyl]piperidine hydrochloride (BTCP, 1) and cocaine bind to the neuronal dopamine transporter to inhibit dopamine (DA) reuptake. However, on chronic administration, cocaine produces sensitization, but 1 produces tolerance. Because metabolites of 1 might be responsible for some of itspharmacological properties, we have identified the primary metabolites of 1 produced
enzyme over the related human glutathionereductase (hGR), as was predicted by our molecular modeling studies. In vitro studies showed IC50 values in the low micromolar to submicromolar range against Trypanosoma brucei rhodesiense, often in combination with low cytotoxicity against mammalian cells. Interestingly, even stronger activities were found against Plasmodiumfalciparum.
Remote Nickel-Catalyzed Cross-Coupling Arylation via Proton-Coupled Electron Transfer-Enabled C–C Bond Cleavage
作者:Long Huang、Tengfei Ji、Magnus Rueping
DOI:10.1021/jacs.9b12490
日期:2020.2.19
carbon-carbon bond activation is still rather underdeveloped due to the bond inertness. Herein, we report a mild and general strategy for the activation of a diverse set of readily available cyclic alcohols for the remote and site-specific arylation of ketones via the combination of photoredox-mediated multisite concerted proton-electron transfer (MS-PCET) and nickel catalysis. The current cross-coupling proceeds
Synthesis and biological evaluation of 1-[1-(2-benzo[b]thienyl)cyclohexyl]piperidine homologs at dopamine-uptake and phencyclidine-, and .sigma.-binding sites
作者:Xiao Shu He、Lionel P. Raymon、Mariena V. Mattson、Mohyee E. Eldefrawi、Brian R. de Costa
DOI:10.1021/jm00061a009
日期:1993.4
related to BTCP exhibited greater selectivity for sites labeled by [3H]BTCP. However, several of the BTCP-related derivatives showed greater (compared with BTCP and cocaine) ability to displace [3H]cocaine. Most notably, 1-[1-(2-benzo[b]thienyl)cyclohexyl]pyrrolidine (7) exhibited a 3.4-fold greater affinity for these sites compared with BTCP and a 9-fold greater affinity at these sites than cocaine
Synthesis of isothiocyanato-1-[1-(2-benzo[b]thienyl)cyclohexyl]piperidines, potential irreversible ligands at the dopamine re-uptake site
作者:Brian de Costa、Clifford George、Celia Dominguez
DOI:10.1039/p19920001671
日期:——
described for the synthesis of piperidone 13, a precursor for 4-isothiocyanatopiperidine 2. NaBH4 or LiAlH4 reduction of 4-(2-benzo[b]thienyl)-4-hydroxycyclohexanone 18 and 4-(2-benzo[b]thienyl)-4-(piperidino)cyclohexanoneoxime 35 gives the corresponding cis-diol 21 and cis-cyclohexane-1,4-diamine 36 as the major isomers which have been investigated as precursors to the cyclohexane ring isothiocyanates
同分异构的异硫氰酸酯衍生物2 - 7强效的多巴胺再摄取(DA)抑制剂1- [1-(2-苯并[的b ]噻吩基)环己基]哌啶(BTCP 1)已被合成作为此网站潜在的不可逆配体。的NaNO 2 -CF 3 CO 2 H,条件温和的程序为苯并[硝化b ]噻吩基的环1为芳基的路线异硫氰酸酯5 - 7。描述了利用3,3-乙烯二氧基戊烷-1,5-二醇二甲磺酸酯的新方法用于合成哌啶酮13,哌啶酮13是4-异硫氰酸根合哌啶的前体2。加入NaBH 4或的LiAlH 4还原4-(2-苯并[ b ]噻吩基)-4-羟基环己酮18和4-(2-苯并[ b ]噻吩基)-4-(哌啶子基)环己酮肟35,得到相应的顺式-二醇21和CIS -环己烷-1,4-二胺36作为已经被研究作为前体到环己烷环异硫氰酸酯的主要的异构体3和4。比较了通往3和4的替代路线,并研究了其立体化学结果。