Heterocyclic rimantadine analogues with antiviral activity
摘要:
2-(1-Adamantyl)-2-methyl-pyrrolidines 3 and 4, 2-(1-adamatityl)-2-methyl-azetidines 5 and 6, and 2-(1-adamantyl)-2-methyl-aziridines 7 and 8 were synthesized and tested for their antiviral activity against influenza A. Parent molecules 3, 5, and 7 contain the alpha-methyl-1-adimantan-methanamine 2 pharmacophoric moiety (rimantadine). The ring size effect on anti-influenza A activity was investigated. Pyrrolidine 3 was the most potent anti-influenza virus A compound, 9-fold more potent than rimantadine 2, 27-fold more potent than amantadine 1, and 22-fold more potent than ribavirin. Azetidines 5 and 6 were both markedly active against influenza A H2N2 virus, 10- to 20-fold more potent than amantadine. Aziridine 7 was almost devoid of any activity against H2N2 virus but exhibited borderline activity against H3N2 influenza A strain. Thus, it appears that changing the five-, to four- to a three-membered ring results in a drop of activity against influenza A virus. (c) 2006 Elsevier Ltd. All rights reserved.
Heterocyclic rimantadine analogues with antiviral activity
摘要:
2-(1-Adamantyl)-2-methyl-pyrrolidines 3 and 4, 2-(1-adamatityl)-2-methyl-azetidines 5 and 6, and 2-(1-adamantyl)-2-methyl-aziridines 7 and 8 were synthesized and tested for their antiviral activity against influenza A. Parent molecules 3, 5, and 7 contain the alpha-methyl-1-adimantan-methanamine 2 pharmacophoric moiety (rimantadine). The ring size effect on anti-influenza A activity was investigated. Pyrrolidine 3 was the most potent anti-influenza virus A compound, 9-fold more potent than rimantadine 2, 27-fold more potent than amantadine 1, and 22-fold more potent than ribavirin. Azetidines 5 and 6 were both markedly active against influenza A H2N2 virus, 10- to 20-fold more potent than amantadine. Aziridine 7 was almost devoid of any activity against H2N2 virus but exhibited borderline activity against H3N2 influenza A strain. Thus, it appears that changing the five-, to four- to a three-membered ring results in a drop of activity against influenza A virus. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis and Transformations of 2-(Adamantan-1-yl)aziridine
作者:M. V. Leonova、N. V. Belaya、M. R. Baimuratov、Yu. N. Klimochkin
DOI:10.1134/s1070428018110040
日期:2018.11
Mono- and disubstituted aziridines derived from sterically hindered olefins of the adamantane series are synthesized. The opening of the aziridine ring under the action of acids is quite a regio- and stereoselective process. Depending on the nature of the nucleophilic agent, the opening of the 2,2-disubstituted aziridine ring can occur by the S(N)1 or S(N)2 mechanism.