A Convenient Synthesis of 4-Acetyl-5-hydroxy-3-methyl-1-substituted Pyrazoles
摘要:
Reaction of 1-(5-hydroxy-3-methyl-1-substituted-4-pyrazolyl)-1, 3-butanediones (1a-d) with 1-hydrazinophthalazine hydrochloride leads to the formation of 4-acetyl-5-hydroxy-3-ethyl-1-substitutedpyrazoles (3a-d) along with 3-methyl-s-triazolo[3,4-a] phthalazine (4) in good yields.
Pyrazolone compounds and thrombopoietin receptor activator
申请人:Miyaji Katsuaki
公开号:US20060069140A1
公开(公告)日:2006-03-30
A preventive, therapeutic or improving agent for diseases against which activation of the thrombopoietin receptor is effective or a platelet increasing agent, which contains a thrombopoietin receptor activator represented by the formula (1): wherein A is a C?2-14#191 aryl group, B is a hydrogen atom, a C?1-6#191 alkyl group, a C?1-3#191 alkyl group substituted with one or more fluorine atoms or a C?2-14#191 aryl group, D is a hydrogen atom, a C?1-6#191 alkyl group, a C?1-3#191 alkyl group substituted with one or more fluorine atoms or a C?2-14#191 aryl group, and E is a C?2-14#191 aryl group, a tautomer, prodrug or pharmaceutically acceptable salt of the activator or a solvate thereof, as an active ingredient.
Singh Shiv P., Kumar Devinder, Kapoor Jitander K., Synth. Commun, 24 (1994) N 18, S 2645-2651
作者:Singh Shiv P., Kumar Devinder, Kapoor Jitander K.
DOI:——
日期:——
PYRAZOLONE COMPOUNDS AS THROMBOPOIETIN RECEPTOR ACTIVATORS
申请人:Nissan Chemical Industries, Ltd.
公开号:EP1549618A1
公开(公告)日:2005-07-06
US8053453B2
申请人:——
公开号:US8053453B2
公开(公告)日:2011-11-08
[EN] PYRAZOLONE COMPOUNDS AND THROMBOPOIETIN RECEPTOR ACTIVATOR<br/>[FR] COMPOSES DE PYRAZOLONE ET ACTIVATEUR DU RECEPTEUR DE LA THROMBOPOIETINE
申请人:NISSAN CHEMICAL IND LTD
公开号:WO2004033433A1
公开(公告)日:2004-04-22
A preventive, therapeutic or improving agent for diseases against which activation of the thrombopoietin receptor is effective or a platelet increasing agent, which contains a thrombopoietin receptor activator represented by the formula (1): wherein A is a C?2-14#191 aryl group, B is a hydrogen atom, a C?1-6#191 alkyl group, a C?1-3#191 alkyl group substituted with one or more fluorine atoms or a C?2-14#191 aryl group, D is a hydrogen atom, a C?1-6#191 alkyl group, a C?1-3#191 alkyl group substituted with one or more fluorine atoms or a C?2-14#191 aryl group, and E is a C?2-14#191 aryl group, a tautomer, prodrug or pharmaceutically acceptable salt of the activator or a solvate thereof, as an active ingredient.