水中前手性碳负离子的催化对映选择性质子化是生物系统中的一种常见转化,但由于质子在水中异常快速的运动会导致不受控制的外消旋质子化,因此这超出了合成化学家的能力。在这里,我们展示了水的关键作用,它能够通过烯二醇中间体的对映选择性质子化进行半硫缩醛的高度对映选择性乙二醛酶 I 模拟催化异构化。由于疏水反应混合物附近的水分子的氢键增强,因此水上条件的使用开启了这种原本极其不活泼的催化反应。此外,在水上条件下,特别是在双相微流体水上条件下,
The bifunctional thiourea–tertiary amine derivatives of simple chiral diamines serve as highly enantioselective catalysts for the Michael addition of α-substituted cyanoacetates to vinyl sulfones, giving an efficient protocol for the construction of an all-carbon substituted quaternary stereocentre.
thiourea moiety and an amino group on a chiral scaffold. Among them, thiourea 1e bearing 3,5-bis(trifluoromethyl)benzene and dimethylamino groups was revealed to be highly efficient for the asymmetric Michael reaction of 1,3-dicarbonyl compounds to nitroolefins. Furthermore, we have developed a new syntheticroute for (R)-(-)-baclofen and a chiralquaternarycarboncenter with high enantioselectivity by Michael
我们在手性支架上合成了一类带有硫脲部分和氨基的新型双功能催化剂。其中,带有 3,5-双(三氟甲基)苯和二甲氨基的硫脲 1e 被证明对于 1,3-二羰基化合物到硝基烯烃的不对称迈克尔反应非常有效。此外,我们通过迈克尔反应开发了 (R)-(-)-巴氯芬和具有高对映选择性的手性季碳中心的新合成路线。在这些反应中,我们假设催化剂的硫脲部分和氨基分别活化硝基烯烃和 1,3-二羰基化合物,以提供具有高对映选择性和非对映选择性的迈克尔加合物。
[EN] PROCESS AND INTERMEDIATES FOR THE PREPARATION OF NEP INHIBITORS<br/>[FR] PROCESSUS ET INTERMÉDIAIRES POUR LA PRÉPARATION D'INHIBITEURS DE LA NÉPRILYSINE (NEP)
申请人:NOVARTIS AG
公开号:WO2016128924A1
公开(公告)日:2016-08-18
The present invention relates to a new chemical synthesis, intermediates and catalysts useful for the preparation of the neprilysin (NEP) inhibitor sacubitril. It further relates to new intermediate compounds and their use for said new chemical synthesis route.
Process and intermediates for the preparation of NEP inhibitors
申请人:Novartis AG
公开号:US10385004B2
公开(公告)日:2019-08-20
The present invention relates to a new chemical synthesis, intermediates and catalysts useful for the preparation of the neprilysin (NEP) inhibitor sacubitril. It further relates to new intermediate compounds and their use for said new chemical synthesis route.