Synthesis and antiplatelet activity of some 3-phenyl-1,8-naphthyridine derivatives
摘要:
A series of 2-cycloalkylamino-3-phenyl-1,8-naphthyridine derivatives, variously substituted in the 6- and 7-positions were synthesized and tested for their ability to inhibit human platelet aggregation in vitro induced by arachidonate, collagen and ADP. Compounds 5a,b, 7a,b, 8a and 10c,d showed a remarkable activity similar to that of indomethacin in the test with arachidonate and collagen. In the test with ADP only compound 8a showed a significant activity. The presence of a morpholinyl or piperidinyl group in position 2 and of a chloro or methoxy group in position 7 of the 1,8-naphthyridine nucleus seem to favour a higher activity. However on the basis of the pharmacological results, no structure-activity relationship can be deduced. Compounds 5b and 7b, which possess the best activity in the arachidonate test, were also shown to increase the c-AMP level significantly, without involving the adenylyl cyclase system. (C) 2000 Elsevier Science S.A. All rights reserved.
Synthesis and antiplatelet activity of some 3-phenyl-1,8-naphthyridine derivatives
作者:Pier Luigi Ferrarini、Claudio Mori、Muwaffag Badawneh、Flavia Franconi、Clementina Manera、Mauro Miceli、Giuseppe Saccomanni
DOI:10.1016/s0014-827x(00)00085-9
日期:2000.11
A series of 2-cycloalkylamino-3-phenyl-1,8-naphthyridine derivatives, variously substituted in the 6- and 7-positions were synthesized and tested for their ability to inhibit human platelet aggregation in vitro induced by arachidonate, collagen and ADP. Compounds 5a,b, 7a,b, 8a and 10c,d showed a remarkable activity similar to that of indomethacin in the test with arachidonate and collagen. In the test with ADP only compound 8a showed a significant activity. The presence of a morpholinyl or piperidinyl group in position 2 and of a chloro or methoxy group in position 7 of the 1,8-naphthyridine nucleus seem to favour a higher activity. However on the basis of the pharmacological results, no structure-activity relationship can be deduced. Compounds 5b and 7b, which possess the best activity in the arachidonate test, were also shown to increase the c-AMP level significantly, without involving the adenylyl cyclase system. (C) 2000 Elsevier Science S.A. All rights reserved.
Unusual nitration of substituted 7-amino-1,8-naphthyridine in the synthesis of compounds with antiplatelet activity
作者:Pier Luigi Ferrarini、Claudio Mori、Muwaffag Badawneh、Clementina Manera、Adriano Martinelli、Federico Romagnoli、Giuseppe Saccomanni、Mauro Miceli
DOI:10.1002/jhet.5570340520
日期:1997.9
possible explanation of the effects induced by the nature of the substituents and of their position. Some of the compounds were tested for their ability to inhibit human platelet aggregation in vitro induced by arachidonic acid. Only compound 26 showed interesting antiplateletactivity.