arylpiperazinylalkylpyridazinones structurally related to the previously described lead A (5-[4-(3-chlorophenyl)piperazin-1-yl]-propyl}-3-methyl-7-phenylisossazolo[4,5-d] pyridazin-4-(5H)-one) were synthesized and tested for their analgesic activity. Many of the tested molecules, at the dose of 20 mg kg-1 p.o., showed high antinociceptive activity, in particular, compounds 5a, 11c, 15a, 21 and 22, which were
Pyridazin-3(2H)-one derivatives of formula (I) are found to inhibit PDE-4. R
1
, R
2
and R
4
are organic radicals, R
3
is a cyclic group, and R
5
is an ester or an aryl or heteroaryl group.
Pyridazin-3(2H)-one derivatives of formula (I) are found to inhibit PDE-4:
wherein
R
1
, R
2
and R
4
are organic radicals, R
3
is a cyclic group, and R
5
is an ester or an aryl or heteroaryl group.
Isoxazolo[3,4-d]pyridazinones and analogues as Leishmania mexicana PDE inhibitors
作者:Vittorio Dal Piaz、A Rascón、M.E Dubra、M.P Giovannoni、C Vergelli、M.C Castellana
DOI:10.1016/s0014-827x(01)01188-0
日期:2002.2
A series of isoxazolopyridazinones and analogues has been prepared and evaluated as Leishmania mexicana phosphodiesterase (PDE) inhibitors. Some of the synthesized compounds showed a moderate PDE inhibitory activity at 100 muM and preliminary structure-activity relationships were discussed. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.