Nucleophilic Reaction upon Electron-Deficient Pyridone Derivatives. X.One-Pot Synthesis of 3-Nitropyridines by Ring Transformation of 1-Methyl-3,5-dinitro-2-pyridone with Ketones or Aldehydes in the Presence of Ammonia
作者:Yasuo Tohda、Miyuki Eiraku、Takao Nakagawa、Yumi Usami、Masahiro Ariga、Toshihide Kawashima、Keita Tani、Hiroko Watanabe、Yutaka Mori
DOI:10.1246/bcsj.63.2820
日期:1990.10
The reaction of 1-methyl-3,5-dinitro-2-pyridone (1a) with ketones or aldehydes in the presence of ammonia gave alkyl- and/or aryl-substituted 3-nitropyridines (6) in moderate to high yields. Enamines derived from the ketones gave better results than did the ketones themselves; on the other hand, those derived from the aldehydes gave no 6 at all. On the basis of deuterium-labeled experiments, a mechanism comprising competitive ring transformations of 1a is proposed.
Disclosed herein are antifungal triazole derivatives or pharmaceutically acceptable salts thereof, a preparation method thereof, and a pharmaceutical composition comprising the same. The triazole derivatives of Chemical Formula 1 or pharmaceutically acceptable salts thereof according to the present invention have excellent inhibitory activity against a broad spectrum of fungi, in addition to being safe to the body, and thus are very useful in the treatment and prevention of fungal infection.
Process for the synthesis of ribonucleotide reductase inhibitors 3-AP
申请人:Vion Pharmaceuticals, Inc.
公开号:US05869676A1
公开(公告)日:1999-02-09
The present invention relates to improved, efficient chemical syntheses of 3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) and 3-amino-4-methylpyridine-2-carboxaldehyde thiosemicarbazone (3-AMP).
[EN] PROCESS FOR THE SYNTHESIS OF RIBONUCLEOTIDE REDUCTASE INHIBITORS 3-AP AND 3-AMP<br/>[FR] PROCEDE DE SYNTHESE D'INHIBITEURS 3-AP ET 3-AMPDE RIBONUCLEOTIDE-REDUCTASE
申请人:VION PHARMACEUTICALS, INC.
公开号:WO1998051670A1
公开(公告)日:1998-11-19
(EN) The present invention relates to improved, efficient chemical syntheses of 3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) and 3-amino-4-methylpyridine-2-carboxaldehyde thiosemicarbazone (3-AMP).(FR) La présente invention concerne la synthèse chimique améliorée et efficace de 3-aminopyridine-2-carboxaldéhyde thiosémicarbazone (3-AP) et 3-amino-4-méthylpyridine-2-carboxaldéhyde thiosémicarbazone (3-AMP).
Benzoxazines and Related Nitrogen-Containing Heterobicyclic Compounds Useful as Mineralocorticoid Receptor Modulating Agents
申请人:Iijima Toru
公开号:US20090023716A1
公开(公告)日:2009-01-22
The present invention relates to a compound, useful as a mineralocorticoid receptor-modulating agent, of the following formula [I]:
wherein Ring A is a benzene ring optionally having a substituent(s) other than R
1
etc, R
1
is a group of the formula: R
a
SO
2
NH— etc, R
a
is an alkyl group etc, R
2
and R
3
are each a hydrogen atom, a phenyl group, an optionally substituted alkyl group etc, X is an oxygen atom etc, Y is a group of the formula: —C(═O)— etc, Ar is an optionally substituted aryl group or an optionally substituted heteroaryl group, Q is a single bond, an alkylene group etc, or a pharmaceutically acceptable salt thereof.