Catalytic Asymmetric Total Synthesis of (−)-Galanthamine and (−)-Lycoramine
作者:Lei Li、Qiao Yang、Yuan Wang、Yanxing Jia
DOI:10.1002/anie.201411338
日期:2015.5.18
conceptually new strategy featuring two metal‐catalyzed reactions as the key steps. A new method for the construction of 3,4‐fused benzofurans has been developed through a palladium‐catalyzed intramolecular Larock annulation reaction, which was successfully applied to the construction of the ABD tricyclic skeleton of 1 and 2. To achieve the asymmetric synthesis of 1 and 2, a ScIII/N,N′‐dioxide complex was used
(-)-加兰他敏(1)和(-)-lycoramine(2)的催化不对称全合成反应已通过采用概念上新颖的策略来实现,该策略以两个金属催化的反应为关键步骤。通过钯催化的分子内Larock环化反应,开发了一种3,4-稠合苯并呋喃的构建新方法,该方法已成功应用于1和2的ABD三环骨架的构建。为了实现1和2的不对称合成,Sc III / N,N'-二氧化物络合物被用来催化3-烷基取代的苯并呋喃酮向甲基乙烯基酮的对映选择性共轭加成反应,以构建手性季碳中心。
[EN] INDOLE AMIDE DERIVATIVES AND RELATED COMPOUNDS FOR USE IN THE TREATMENT OF NEURODEGENERATIVE DISEASES<br/>[FR] DÉRIVÉS D'INDOLAMIDE ET COMPOSÉS ASSOCIÉS DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT DES MALADIES NEURODÉGÉNÉRATIVES
申请人:UNIV LEUVEN KATH
公开号:WO2010142801A1
公开(公告)日:2010-12-16
This invention provides novel compounds and the novel compounds for use as a medicine, more in particular for the prevention or treatment of neurodegenerative disorders, more specifically certain neurological disorders, such as disorders collectively known as tauopathies, and disorders characterised by cytotoxic α-synuclein amyloidogenesis. The present invention also relates to the use of said novel compounds for the manufacture of medicaments useful for treating such neurodegenerative disorders. The present invention further relates to pharmaceutical compositions including said novel compounds and to methods for the preparation of said novel compounds.
Decarboxylative cross-nucleophile coupling via ligand-to-metal charge transfer photoexcitation of Cu(ii) carboxylates
作者:Qi Yukki Li、Samuel N. Gockel、Grace A. Lutovsky、Kimberly S. DeGlopper、Neil J. Baldwin、Mark W. Bundesmann、Joseph W. Tucker、Scott W. Bagley、Tehshik P. Yoon
DOI:10.1038/s41557-021-00834-8
日期:2022.1
nucleophiles under visible-light irradiation. Preliminary mechanistic studies suggest that the relevant chromophore in this reaction is a Cu(ii) carboxylate species assembled in situ. We propose that visible-light excitation to a ligand-to-metal chargetransfer (LMCT) state results in a radical decarboxylation process that initiates the oxidative cross-coupling. The reaction is applicable to a wide
能够形成碳-氮、碳-氧和碳-碳键的反应是合成化学的核心。然而,通常需要底物预功能化来实现此类转化,而无需强制反应条件。因此,开发丰富的原料化学品的直接偶联方法对于快速构建复杂的分子支架是非常必要的。在这里,我们报道了在可见光照射下羧酸与多种亲核试剂的铜介导的净氧化脱羧偶联。初步机理研究表明,该反应中的相关生色团是原位组装的 Cu( ii ) 羧酸盐物种。我们提出,可见光激发配体到金属的电荷转移(LMCT)状态会导致自由基脱羧过程,从而引发氧化交叉偶联。该反应适用于多种偶联伙伴,包括复杂的药物分子,表明这种交叉亲核偶联策略将促进快速化合物库合成,以发现新的药物制剂。
[EN] TRICYCLIC COMPOUNDS AS ALPHA-7 NICOTINIC ACETYLCHOLINE RECEPTOR LIGANDS<br/>[FR] COMPOSÉS TRICYLIQUES UTILISÉS COMME LIGANDS DU RÉCEPTEUR NICOTINIQUE ALPHA-7 DE L'ACÉTYLCHOLINE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2015191403A1
公开(公告)日:2015-12-17
The disclosure provides compounds of formula I including their salts, as well as compositions and methods of using the compounds. The compounds are ligands for the nicotinic 7 receptor and may be useful for the treatment of various disorders of the central nervous system, especially affective and neurodegenerative disorders. [INSERT CHEMICAL STRUCTURE HERE] I
本公开提供了公式I的化合物,包括它们的盐,以及使用这些化合物的组合物和方法。这些化合物是烟酸7受体的配体,可能用于治疗各种中枢神经系统疾病,尤其是情感和神经退行性疾病。 [在此插入化学结构] I
Synthesis of the 5-HT1D receptor agonist MK-0462 via a Pd-catalyzed coupling reaction
作者:Cheng-yi Chen、David R. Lieberman、Robert D. Larsen、Robert A. Reamer、Thomas R. Verhoeven、Paul J. Reider、Ian F. Cottrell、Peter G. Houghton
DOI:10.1016/0040-4039(94)88204-5
日期:1994.9
Application of a palladium-catalyzed coupling between 3 and 5a to the synthesis of the novel 5-HT1DreceptoragonistMK-0462 (1), a potential anti-migraine drug, is described.