Cyclizations of monocyclic 5-nitropyridin-2(1H)-ones
摘要:
Reactions of 5-nitropyridin-2(1H)-one and its N-methyl derivative with hydrazine hydrate led to the formation of (1H-pyrazol-3-yl)acetohydrazide. Under analogous conditions, 1,3-dimethyl-5-nitropyridin-2(1H-one gave rise to 2-(1H-pyrazol-3-yl)propionohydrazide, while 6-methyl-5-nitropyridin-2(1H-one was converted into (5-methyl-1H-pyrazol-3-yl)acetohydrazide. Hydrazinolysis of4-methyl-5-nitropyridin-2(1H)-one resulted in the formation of 3-methyl-4-nitro-1H-pyrazole. The mechanism of recyclization of nitropyridine derivatives by the action of hydrazine hydrate was studied using 5-nitropyridin-2(1H)-one and 1-methyl-5-nitropyridin-2(1H)-one as examples.
[EN] METHODS AND COMPOSITIONS ASSOCIATED WITH THE GRANULOCYTE COLONY-STIMULATING FACTOR RECEPTOR<br/>[FR] PROCÉDÉS ET COMPOSITIONS ASSOCIÉS AU RÉCEPTEUR DU FACTEUR DE STIMULATION DES COLONIES DE GRANULOCYTES
申请人:LIGAND PHARM INC
公开号:WO2013074459A1
公开(公告)日:2013-05-23
Some embodiments include compositions and methods of using or identifying compounds that modulate the activity of the granulocyte colony-stimulating factor receptor (GCFR). Some embodiments include use of compounds to treat certain disorders, such as hematopoietic or neurological disorders.
METHODS AND COMPOSITIONS ASSOCIATED WITH THE GRANULOCYTE COLONY-STIMULATING FACTOR RECEPTOR
申请人:Ligand Pharmaceuticals Inc.
公开号:EP2780322A1
公开(公告)日:2014-09-24
Cyclizations of monocyclic 5-nitropyridin-2(1H)-ones
作者:N. N. Smolyar、Yu. M. Yutilov
DOI:10.1134/s1070428008080174
日期:2008.8
Reactions of 5-nitropyridin-2(1H)-one and its N-methyl derivative with hydrazine hydrate led to the formation of (1H-pyrazol-3-yl)acetohydrazide. Under analogous conditions, 1,3-dimethyl-5-nitropyridin-2(1H-one gave rise to 2-(1H-pyrazol-3-yl)propionohydrazide, while 6-methyl-5-nitropyridin-2(1H-one was converted into (5-methyl-1H-pyrazol-3-yl)acetohydrazide. Hydrazinolysis of4-methyl-5-nitropyridin-2(1H)-one resulted in the formation of 3-methyl-4-nitro-1H-pyrazole. The mechanism of recyclization of nitropyridine derivatives by the action of hydrazine hydrate was studied using 5-nitropyridin-2(1H)-one and 1-methyl-5-nitropyridin-2(1H)-one as examples.