Asymmetric Henry reaction catalyzed by chiral secondary diamine-copper(II) complexes
摘要:
The enantioselective Henry reaction was efficiently carried out under mild reaction conditions in 96% ethanol. The chiral C-2-symmetric, secondary bisamines based on the 1,2-diaminocyclohexane framework and copper(II) acetate were found to promote the asymmetric nitroaldol reaction. Aromatic and aliphatic aldehydes were reacted with nitromethane to provide the corresponding beta-nitroalcohols in very good yields and enantioselectivities up to 94%. (C) 2008 Elsevier Ltd. All rights reserved.
[EN] BENZOPIPERIDINE DERIVATIVES AND THEIR USE IN THE TREATMENT OF CANCER AND HEMOGLOBINOPATHIES<br/>[FR] DÉRIVÉS DE BENZOPIPÉRIDINE ET LEUR UTILISATION DANS LE TRAITEMENT DU CANCER ET DES HÉMOGLOBINOPATHIES
申请人:CTXT PTY LTD
公开号:WO2017153520A1
公开(公告)日:2017-09-14
A compound of formula I: (I) wherein: n is 1 or 2; p is 0 or 1; R1a, R1b, R1c and R1d are independently selected from H, halo, C1-4 alkyl, C1-4 fluoroalkyl, C3-4 cycloalkyl, C1-4 alkyloxy, NH-C1-4 alkyl and cyano; R2a and R2b are independently selected from the group consisting of: (i) F; (ii) H; (iii) Me; and (iv) CH2OH; R2c and R2d are independently selected from the group consisting of: (i) F; (ii) H; (iii) Me; and (iv) CH2OH; R2e is H or Me; R3a and R3b are independently selected from H and Me; R4 is either H or Me; R5 is either H or Me; R6a and R6b are independently selected from H and Me; A is either (IIa), where R7a is selected from N-linked N-containing C5-7 heterocycyl and (A); or (ii) (IIb), where X is selected from CH2, N H and O, one of R8a and R8b is selected from CI and ethoxy and the other of R8a and R8b is H.
mild and chemodivergent transformation involving nitroalkanes has been developed. Under optimized reaction conditions, in the presence of trichlorosilane and a tertiary amine, aliphatic nitroalkanes were selectively converted into amines or nitriles. Furthermore, when chiral β-substituted nitrocompounds were reacted, the stereochemical integrity of the stereocenter was maintained and α-functionalized
Machine‐Assisted Preparation of a Chiral Diamine Ligand Library and In Silico Screening Using Ab Initio Structural Parameters for Heterogeneous Chiral Catalysts
containing 31 chiral diamines was synthesized using a flow-based semiautomatic reductiveaminationsystem. These ligands were evaluated in a continuous-flow asymmetric 1,4-addition reaction with a heterogeneous Ni catalyst. Based on the experimental results of ab initio DFT calculations, a prediction model for enantioselectivities was successfully constructed. Furthermore, virtual screening of possible ligands
使用基于流动的半自动还原胺化系统合成了包含 31 个手性二胺的配体库。这些配体在与非均相 Ni 催化剂的连续流动不对称 1,4-加成反应中进行了评估。基于 ab initio DFT 计算的实验结果,成功构建了对映选择性的预测模型。此外,对可能的配体进行虚拟筛选以鉴定有希望的结构,其在实验中显示出良好的对映选择性。
[EN] TETRAHYDROISOQUINOLINES AS PRMT5 INHIBITORS<br/>[FR] TÉTRAHYDRO-ISOQUINOLÉINES EN TANT QU'INHIBITEURS DE PRMT5
申请人:CTXT PTY LTD
公开号:WO2017153513A1
公开(公告)日:2017-09-14
A compound of formula (I) wherein: n is 1 or 2; p is 0 or 1; R1a, R1b, R1c and R1d are independently selected from the group consisiting of H, halo, C1-4 alkoxy, C1-4 alkyl, C1-4 fluoroalkyl, C3-4 cycloalkyl, NH-C1-4 alkyl and cyano; R2a and R2b are independently selected from the group consisting of: (i) F; (ii) H; (iii) Me; and (iv) CH2OH; R2c and R2d are independently selected from the group consisting of: (i) F; (ii) H; (iii) Me; and (iv) CH2OH; R2e is H or Me; R3a and R3b are independently selected from H and Me; R4 is either H or Me; R5 is either H or Me; R6a and R6b are independently selected from H and Me; A is either (i) optionally substituted phenyl; (ii) optionally substituted naphthyl; or (iii) optionally substituted C5-12 heteroaryl; wherein when R2e is H, at least one of R1a, R1b, R1c and R1d is selected from C1-4 alkoxy, C2-4 alkyl, C1-4 fluoroalkyl, C3-4 cycloalkyl, NH-C1-4 alkyl and cyano.