Synthesis and structure–activity relationships of N3-pyridylpyrazinones as corticotropin-releasing factor-1 (CRF1) receptor antagonists
摘要:
A series of N-3-pyridylpyrazinones was investigated as corticotropin-releasing factor-1 receptor antagonists. It was observed that the binding affinity of analogues containing a pyridyl group was influenced not only by the substitution pattern on the pyridyl group, but also by the pK(a) of the pyridyl nitrogen. Analogues containing a novel 6-(difluoromethoxy)-2,5-dimethylpyridin-3-amine group were among the most potent N-3-pyridylpyrazinones synthesized. The synthesis and SAR of N-3-pyridylpyrazinones is described herein. (C) 2010 Elsevier Ltd. All rights reserved.
Ring-transformations of pyrimidines by intramolecular diels-alder reactions. Synthesis of annelated fyridines
作者:A.E. Frissen、A.T.M. Marcelis、H.C. Van Der Plas
DOI:10.1016/0040-4020(89)80111-5
日期:1989.1
Pyrimidines carrying an ω-alkyne side-chain -XCH2CH2CCH (X=O,N,S,SO,SO2) at the 2 or 5 position undergo intramolecularinverseelectrondemandDiels-Alderreactions across the C-2 and C-5 positions; elimination of hydrogen (or alkyl) cyanide from the intermediate adducts leads to condensed pyridines. The influence of the hetero atom (X) in the dienophilic side-chain and that of substituents in the
Novel intramolecular Diels-Alder reactions of pyrimidines. Synthesis of heterocyclic annelated pyridines
作者:August E. Frissen、Antonius T.M. Marcelis、Henk C. van der Plas
DOI:10.1016/s0040-4039(01)81049-2
日期:1987.1
Pyrimidines carrying a dienophilic side-chain at the 2 or 5 position undergo intramolecularDiels-Alderreactions to give heterocyclic annelated pyridines.