137075-01-5Relevant academic research and scientific papers
(Pyridylcyanomethyl)piperazines as orally active PAF antagonists
Carceller,Almansa,Merlos,Giral,Bartroli,Garcia-Rafanell,Forn
, p. 4118 - 4134 (2007/10/02)
A series of (pyridylcyanomethyl)piperazines was prepared and evaluated for PAF-antagonist activity. Compounds were tested in vitro in a PAF-induced platelet aggregation assay and in vivo in a PAF-induced hypotension test in normotensive rats. Oral activity was ascertained through a PAF-induced mortality test in mice. The main structure-activity trends of the series were established. Activity was mainly found in four skeletons: 1-acyl-4-(3- pyridylcyanomethyl)-piperazine, 1-acyl-4-(4-pyridylcyanomethyl)piperazine, 1- acyl-4-(3-pyridylcyanomethyl)piperidine, and 1-acyl-4-cyano-4-(3- pyridylamino)piperidine. The acyl substituents, diphenylacetyl and 3,3- diphenylpropionyl, provided the most active compounds, and the introduction of an amine or hydroxy group in the 3,3-diphenylpropionyl substituent led to further improvement in oral activity. As a result, three of the most active compounds (100, 114, and 115) have been selected for further pharmacological development.
(cyanomethyl)pyridines useful as PAF antagonists
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, (2008/06/13)
57 The present invention relates to new (cyanomethyl)pyridines of general formula I: wherein Ais nitrogen and Bis -CH-, or Bis nitrogen and Ais -CH-; the group Y-W-represents a group of formula N-CR1(CN)-, N-CH2-CH(CN)-, CH-CH(CN)- or C=C(CN)- wherein R1 is hydrogen or a C1-C6 alkyl group; Rrepresents a group of formula R2CO-,R3R4N-(CH2)nCO- or R5-(CH2)m- wherein R2 represents C1-C15 alkyl, aryl, aryl-(C1-C6)-alkyl, aryl-(C1-C6)-alkenyl, diaryl-(C1-C6)-alkyl, diaryl-(C1-C6)-alkenyl, arylhydroxy-(C1-C6)-alkyl, diarylhydroxy-(C1-C6)-alkyl, aryl-(C1-C6)-alkoxy, diaryl-(C1-C6)-alkoxy, or heteroaryl-(C1-C6)-alkyl group; n is 0, 1, 2 or 3; R3 is hydrogen, C1-C6 alkyl, aryl or aryl-(C1-C6)-alkyl group; R4 is C3-C6 cycloalkyl, aryl, aryl-(C1-C6)-alkyl, diaryl-(C1-C6)-alkyl, aryl-(C1-C6)-alkylcarbonyl or diaryl-(C1-C6)-alkylcarbonyl group; m is 0, 1 or 2; and R5 is aryl-(C1-C6)-alkyl, diaryl-(C1-C6)-alkyl, diaryl-(C1-C6)-alkylcarbonylamino or diaryl-(C1-C6)-alkylaminocarbonyl group. These compounds are potent, orally active PAF antagonists and consequently, useful in the treatment of the diseases in which this substance is involved.
