[EN] DISUBSTITUTED OCTAHY-DROPYRROLO [3,4-C] PYRROLES AS OREXIN RECEPTOR MODULATORS<br/>[FR] OCTAHYDROPYRROLO [3,4-C] PYRROLES DISUBSTITUÉS UTILISÉS COMME MODULATEURS DU RÉCEPTEUR DE L'OREXINE
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2012145581A1
公开(公告)日:2012-10-26
Disubstituted octahydropyrrolo[3,4-c]pyrrole compounds are described, which are useful as orexin receptor modulators. Such compounds may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia.
The present invention relates to processes for preparing certain 2-pyridones and 2-pyridinols, to novel compounds of these two types and to their use as biologically active compounds, in particular for controlling harmful microorganisms in crop protection, in the medicinal field and in the protection of materials.
Asymmetric Retro-Claisen Reaction by Chiral Primary Amine Catalysis
作者:Yunbo Zhu、Long Zhang、Sanzhong Luo
DOI:10.1021/jacs.6b00627
日期:2016.3.30
The communication describes an enamine-based asymmetric retro-Claisen reaction of β-diketones by primaryamine catalysis. The reaction proceeds via a sequence of stereoselective C-C formation, C-C cleavage, and a highly stereospecific enamine protonation to afford chiral α-alkylated ketones or macrolides with high yields and enantioselectivities. A detailed mechanism was explored on the basis of experimental
该通讯描述了伯胺催化下 β-二酮的基于烯胺的不对称逆克莱森反应。该反应通过一系列立体选择性 CC 形成、CC 裂解和高度立体有择的烯胺质子化进行,以提供具有高产率和对映选择性的手性 α-烷基化酮或大环内酯。在实验证据和计算研究的基础上探索了详细的机制,以解释观察到的立体控制。
Highly Stereoselective Construction of β,β-Diaryl-α-Branched Ketones by the Chiral Primary Amine-Catalyzed Asymmetric Retro-Claisen Reaction
作者:Yanfang Han、Long Zhang、Sanzhong Luo
DOI:10.1021/acs.orglett.2c00435
日期:2022.3.4
Highlydiastereo- and enantioselective retro-Claisen reaction of β-diketones with o-quinone methides has been developed by chiral primary amine catalysis. This reaction allows for efficient synthesis of chiral β,β-diaryl-α-branched ketones in moderate to good yields with excellent stereoselectivities. The reaction occurs via a tandem sequence of benzylic C–C bond formation, C–C bond cleavage, and stereospecific
Hypervalent iodine oxidation: α-Functionalization of β-dicarbonyl compounds using iodosobenzene
作者:Robert M. Moriarty、Radhe K. Vaid、Vasulinga T. Ravikumar、Beena K. Vaid、Thomas E. Hopkins
DOI:10.1016/s0040-4020(01)86720-x
日期:1988.1
Hypervalent iodine oxidation of β-diketones and β-ketoesters with iodosobenzene-boron trifluoride etherate in chloroform using appropriate nucleophiles results In α-functionalization. Benzoylacetone on reaction with iodosobenzene or iodosobenzene boron trifluoride-etherate in methanol yields α-methoxyacetophenone () and methyl phenylacetate (). The possible mechanisms for these reactions are discussed