Nickel-Catalyzed Isomerization/Allylic Cyanation of Alkenyl Alcohols
作者:Ying Ding、Jinguo Long、Feilong Sun、Xianjie Fang
DOI:10.1021/acs.orglett.1c02143
日期:2021.8.6
Herein reported is a nickel-catalyzed isomerization/allylic cyanation of alkenyl alcohols, which complements current methods for the allylic substitution reactions. The specific diphosphite ligand and methanol as the solvent are crucial for the success for this transformation. A gram-scale regioconvergent experiment and formal synthesis of quebrachamine demonstrate the high potential of this methodology
Pd-catalyzed asymmetric carboetherification of γ,δ-alkenyl oximes with (hetero)aryl and alkenyl halides in the presence of a commercially available bisphosphine ligand. The enantioenriched products can be facilely converted to functionalized alcohols with high fidelity of chiral transfer.
remains underdeveloped. Herein we report the copper-catalyzed Cope-type hydroamination of oximes with pendant nonactivated olefins, which enables facile access to a series of five- and six-membered cyclic nitrones under mild conditions. In this study, heterocycle-tethered oximes were employed in the Cope-type hydroaminationreaction for the first time. High enantioselectivity was achieved for carbon-tethered
2,5-Disubstituted tetrahydrofurans as selective serotonin re-uptake inhibitors
作者:Troy Voelker、Haiji Xia、Keith Fandrick、Robert Johnson、Aaron Janowsky、John R. Cashman
DOI:10.1016/j.bmc.2009.01.023
日期:2009.3
were prepared based on (−)-cocaine and aryltropanes as lead compounds because they are reasonably potent 5-HT re-uptake inhibitors. Molecular dissection of an aryltropane provided a series of 5- and 6-memberedring compounds. From among this library of compounds a series of disubstituted tetrahydrofurans bearing 2-alkyl aryl and 5-alkyl amino groups were identified as having highly potent and selective
5-羟色胺(5-HT,5-羟色胺)神经传递的增强是治疗抑郁症的可行方法。基于该观察结果,基于(-)-可卡因和芳基环烷类作为先导化合物,制备了抑制5-HT再摄取的药物,因为它们是有效的5-HT再摄取抑制剂。芳基托烷的分子分解提供了一系列的5元和6元环化合物。从该化合物库中,鉴定出一系列带有2-烷基芳基和5-烷基氨基的二取代四氢呋喃具有高度有效和选择性的5-HT再摄取抑制作用。评价化合物与放射性标记的RTI-55结合竞争的能力以及在人多巴胺,5-羟色胺和去甲肾上腺素转运蛋白上抑制神经递质再摄取的能力。基于效力(例如,K i = 800 pM)和显着的功能选择性(例如,人多巴胺:5-羟色胺或去甲肾上腺素:5-羟色胺的IC 50比,⩾1397)被确定为高效和选择性的5-羟色胺再摄取抑制剂。在结合亲和力和再摄取抑制中起主要作用的最佳特征包括芳族部分上的亲脂取代,反式2,5-二取代的四氢呋喃环的相对
Modulators of Central Nervous System Neurotransmitters
申请人:Cashman John
公开号:US20080261967A1
公开(公告)日:2008-10-23
Disclosed are agents having pharmacological activity against cellular receptors and intracellular signaling, particularly receptors and signaling pathways of central nervous system (CNS) neurotransmitters. Also disclosed are related methods and compositions for the treatment or prevention of diseases or disorders using the agents.