Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 36, Issue 4, Pages 367-374Publisher
EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/S0223-5234(01)01228-4
Keywords
syn dimeric 4-aryl-1,4-dihydropyridines; HIV-1 protease inhibitor; competitive inhibition
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A first series of novel N-alkyl substituted syn dimeric 4-aryl-1,4-dihydropyridines 12-17 have been synthesised and evaluated as HIV-I protease inhibitors in in vitro assays. While the N-methyl derivatives 12 and 13 were almost inactive, with IC50-values of about 225 muM, the N-benzyl compounds with varied ester groups all exhibited stronger activities, with IC50-values of 11-12 muM for the presently best compounds 16 and 17 with ethyl ester functions. The type of HIV-1 protease inhibition of the novel inhibitors was characterised as competitive. With the increase of observed activity from N-methyl derivatives to N-benzyl compounds the binding mode may correspond to that of cyclic ureas with hydrophobic interactions of the four aromatic residues to the S1/S1' and S2/S2' regions of HIV-I protease. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
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