An efficient synthesis of 6-formyl-1,2-dihydro-2-oxo-3-pyridinecarboxylic acid and some carbonyl derivatives of it and its 6-acetyl homologue
作者:Joseph P. Sanchez、Thomas F. Mich、Gin G. Huang
DOI:10.1002/jhet.5570310207
日期:1994.3
a highly efficient, 4-step synthesis. This compound, along with its one carbon homologue, 6-acetyl-1,2-dihydro-2-oxo-3-pyridinecarboxylic acid (5b) has been reacted with several carbonyl derivative forming reagents to provide a series of sidechains for β-lactams. Among these carbonyl derivatives are styrylamides which were prepared from Wittig and Horner-Emmons reagents. The preparation of the phosphonium
Functionalization of substituted 2-(1<i>H</i>)pyridones. II. Synthetic pathways to c-6 modified 3-cyano- and 3-carboxy-2-(1<i>H</i>)pyridones from a common precursor
作者:H. D. Hollis Showalter、John M. Domagala、Joseph P. Sanchez
DOI:10.1002/jhet.5570180825
日期:1981.12
Starting from readily available 1,2-dihydro-6-methyl-2-oxo-3-pyridinecarbonitrile, 1, viable syntheticpathways to a number of C-6functionalized 1,2-dihydro-2-oxo-3-pyridinecarbonitriles and corresponding acids are presented. Through the utilization of dianion chemistry, the C-6 methyl substituent is selectively functionalized to three different oxidation levels.
4,5-DIHYDRO-1H-PYRAZOLE COMPOUNDS AND THEIR PHARMACEUTICAL USES
申请人:Arhancet Graciela Barbieri
公开号:US20120022058A1
公开(公告)日:2012-01-26
Mineralocorticoid receptor antagonists (MRa), pharmaceutical compositions containing such inhibitors and the use of such inhibitors to treat, for example, diabetic nephropathy and hypertension in mammals, including humans.
[EN] 4, 5-DIHYDRO-1H-PYRAZOLE COMPOUNDS AND THEIR PHARMACEUTICAL USES<br/>[FR] COMPOSÉS 4,5-DIHYDRO-LH-PYRAZOLE ET LEURS UTILISATIONS PHARMACEUTIQUES
申请人:PFIZER
公开号:WO2010116282A8
公开(公告)日:2011-11-03
Synthesis and cross coupling of a highly substituted 2-pyridylboronate: application to the large scale synthesis of a mineralocorticoid antagonist
作者:Charles Boos、Daniel M. Bowles、Cuiman Cai、Agustin Casimiro-Garcia、Xiangyang Chen、Catherine A. Hulford、Sandra M. Jennings、E. Jason Kiser、David W. Piotrowski、Matthew Sammons、Robert A. Wade
DOI:10.1016/j.tetlet.2011.10.052
日期:2011.12
The large scale synthesis of a functionalized 2-pyridylboronate 8 and optimization of its Suzuki-Miyaura coupling to chloropyrazoline (R)-7 to provide a scalable synthesis of mineralocorticoid antagonist (R)-1 is described. (C) 2011 Elsevier Ltd. All rights reserved.