Highly Enantioselective Iron-Catalyzed <i>cis</i>
-Dihydroxylation of Alkenes with Hydrogen Peroxide Oxidant via an Fe<sup>III</sup>
-OOH Reactive Intermediate
作者:Chao Zang、Yungen Liu、Zhen-Jiang Xu、Chun-Wai Tse、Xiangguo Guan、Jinhu Wei、Jie-Sheng Huang、Chi-Ming Che
DOI:10.1002/anie.201603410
日期:2016.8.22
catalysts for highly enantioselective asymmetric cis‐dihydroxylation (AD) of alkenes with broad substrate scope remains a challenge. By employing [FeII(L)(OTf)2] (L=N,N′‐dimethyl‐N,N′‐bis(2‐methyl‐8‐quinolyl)‐cyclohexane‐1,2‐diamine) as a catalyst, cis‐diols in up to 99.8 % ee with 85 % isolated yield have been achieved in AD of alkenes with H2O2 as an oxidant and alkenes in a limiting amount. This “[FeII(L)(OTf)2]+H2O2”
开发具有良好底物范围的烯烃的高对映选择性不对称顺二羟基化(AD)的环境友好型催化剂仍然是一个挑战。通过使用[Fe II(L)(OTf)2 ](L = N,N'-二甲基-N,N'-双(2-甲基-8-喹啉基)-环己烷-1,2-二胺)作为催化剂,在以H 2 O 2为氧化剂的烯烃和数量有限的烯烃的AD中,已实现了高达99.8%ee的顺式二醇和85%的分离产率。该“ [Fe II(L)(OTf)2 ] + H 2 O 2”方法适用于(E)-烯烃和末端烯烃(24个实例,ee大于80%,最大1 g)。机理研究包括18种O-标记,UV / Vis,EPR,ESI-MS分析和DFT计算,为手性Fe III- OOH活性物种参与两个C-O键的对映选择性形成提供了证据。
Combining HFEPR and NMR Spectroscopies to Characterize Organochromium(III) Complexes with Large Zero-Field Splitting
now that the pseudocontact (dipolar) shifts can be accurately determined. The results show the power of integrated magnetic resonance (EPR and NMR) spectroscopy combined with theoretical calculations in understanding the subtleties of electronicstructure of the paramagnetic organometallic complex, in this case with S > 1/2, which could then be related to chemical reactivity or magnetic properties
基于与CrCl 2部分配位的喹啉取代的环戊二烯基环的一系列三个有机铬(III)配合物-C 5 Me 4(C 9 NH 6)CrCl 2(1),C 5 Ph 4(C 9 NH 6))CrCl 2(2)和C 5 Me 4(C 11 NH 10)CrCl 2(3)-已通过EPR光谱法进行了研究,包括高频和场EPR(HFEPR)以及11 H NMR。配合物3是新的,并且比1和2具有更高的溶解度,可以潜在地提高其作为烯烃聚合预催化剂的活性,该应用已针对1和2进行了文献报道。所述HFEPR研究表明,1 - 3表现出零场分裂(ZFS)即铬(III)(3D异常大3,小号= 3/2),如由轴向ZFS参数给定的d ≥〜3厘米-1。在这里确定的zfs为1与其他工人先前对该复合物的理论研究非常吻合,这些研究是在没有任何实验数据知识的情况下进行的。这种对理论和实验的“盲目”比较非常罕见。使用zfs数据对3的NMR光
[EN] BINDING FUNCTION3 (BF3) SITE COMPOUNDS AS THERAPEUTICS AND METHODS FOR THEIR USE<br/>[FR] COMPOSÉS DE SITE DE (BF3) AYANT UNE FONCTION 3 DE LIAISON UTILISÉS EN TANT QU'AGENTS THÉRAPEUTIQUES ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV BRITISH COLUMBIA
公开号:WO2015154169A1
公开(公告)日:2015-10-15
This invention provides compound having a structure of Formulas: Uses of such compounds for treatment of various indications, including prostate cancer as well as methods of treatment involving such compounds are also provide.
Structure-activity relationships, biological evaluation and structural studies of novel pyrrolonaphthoxazepines as antitumor agents
作者:Margherita Brindisi、Cristina Ulivieri、Gloria Alfano、Sandra Gemma、Francisco de Asís Balaguer、Tuhina Khan、Alessandro Grillo、Giulia Chemi、Grégory Menchon、Andrea E. Prota、Natacha Olieric、Daniel Lucena-Agell、Isabel Barasoain、J. Fernando Diaz、Angela Nebbioso、Mariarosaria Conte、Ludovica Lopresti、Stefania Magnano、Rebecca Amet、Paula Kinsella、Daniela M. Zisterer、Ola Ibrahim、Jeff O'Sullivan、Lucia Morbidelli、Roberta Spaccapelo、Cosima Baldari、Stefania Butini、Ettore Novellino、Giuseppe Campiani、Lucia Altucci、Michel O. Steinmetz、Simone Brogi
DOI:10.1016/j.ejmech.2018.11.004
日期:2019.1
efforts we developed improved pyrrolonaphthoxazepines antitumoragents and their mode of action at the molecular level was elucidated. Compound 6j, one of the most potent analogues, was confirmed by X-ray as a colchicine-site MTA. A comprehensive structural investigation was performed for a complete elucidation of the structure-activityrelationships. Selected pyrrolonaphthoxazepines were evaluated for
Design, Synthesis, and Evaluation in Vitro of Quinoline-8-carboxamides, a New Class of Poly(adenosine-diphosphate-ribose)polymerase-1 (PARP-1) Inhibitor
作者:Anna-Marie Lord、Mary F. Mahon、Matthew D. Lloyd、Michael D. Threadgill
DOI:10.1021/jm8013629
日期:2009.2.12
prepared by selective Pd-catalyzed couplings at the 2-position of 2,8-dibromoquinoline, followed by lithium−bromine exchange of the intermediate 2-(alkyl/aryl)-8-bromoquinolines and reaction with trimethylsilyl isocyanate. The intramolecularhydrogenbond was confirmed by X-ray and by NMR. The SAR of the 3-substituted compounds for inhibition of human recombinant PARP-1 activity showed a requirement