67706-69-8Relevant articles and documents
7-SUBSTITUTED 1-PYRIDYL-NAPHTHYRIDINE-3-CARBOXYLIC ACID AMIDES AND USE THEREOF
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Paragraph 0479-0482, (2019/08/20)
The present application relates to novel 7-substituted 1-pyridylnaphthyridine-3-carboxamides, to processes for their preparation, to their use, alone or in combinations, for the treatment and/or prevention of diseases, and to their use for the production
Ru-catalyzed asymmetric hydrogenation of γ-heteroatom substituted β-keto esters
Fan, Weizheng,Li, Wanfang,Ma, Xin,Tao, Xiaoming,Li, Xiaoming,Yao, Ying,Xie, Xiaomin,Zhang, Zhaoguo
experimental part, p. 9444 - 9451 (2012/01/13)
A series of enantiomerically pure γ-heteroatom substituted β-hydroxy esters were synthesized with high enantioselectivities (up to 99.1% ee) by hydrogenation of γ-heteroatom substituted β-keto esters in the presence of Ru-(S)-SunPhos catalyst. These asymmetric hydrogenations provide key building blocks for a variety of naturally occurring and biologically active compounds.
1,3-Dipolar cycloaddition route to nitrogen heterocyclic triones
Jones, Raymond C. F.,Bhalay, Gurdip,Carter, Paul A.,Duller, Kathryn A. M.,Dunn, Stephen H.
, p. 765 - 776 (2007/10/03)
1,3-Dipolar cycloaddition of nitrile oxides, formed in situ by dehydration of primary nitro compounds, with pyrrolidine enamines of protected γ- or δ-amino-β-keto esters affords isoxazole-4-carboxylates; these undergo lactam formation and N-O bond cleavage to afford 3-acyltetramic acids and 3-acyl-4-hydroxypyridin-2-ones.
