[EN] PYRROLOPYRIDAZINE DERIVATIVES<br/>[FR] DERIVES DE PYRROLOPYRIDAZINE
申请人:FUJISAWA PHARMACEUTICAL CO
公开号:WO2004063197A1
公开(公告)日:2004-07-29
The invention relates to compound of the formula (I) or its salt, in which R1, R2, R3 and R4 are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-α mediated diseases.
Synthesis and properties of homomologated and contracted dipyrrinone analogs of xanthobilirubic acid
作者:Gisbert Puzicha、David P. Shrout、David A. Lightner
DOI:10.1002/jhet.5570270749
日期:1990.11
Dipyrrinoneanalogs of xanthobilirubicacid, 5-[1,5-didehydro-3-ethyl-4-methyl-5-oxo-2H-pyrrol-2-ylidene)-methyl]-2,4-dimethyl-1H-pyrrol-3-propanoic acid, with alkanoic acid chain lengths varying from formic to caproic have been synthesized as their methyl esters and characterized spectroscopically. All of the dipyrrinones studied exhibit intermolecular hydrogen bonding in chloroform, as detected by
The invention relates to compound of the formula (I) or its salt, in which R
1
, R
2
, R
3
and R
4
are as defined in the description, their use of as medicament, the process for their preparation and use for the treatment of PDE-IV or TNF-α mediated diseases.