Adenosine, 2'-deoxy-4'-C-ethynyl-

4'-Ethynyl-2'-deoxyadenosine (4'-E-dA), a nucleoside reverse transcriptase (RT) inhibitor, is an antiretroviral agent which is potent against drug-resistant HIV variants, with an EC50 of 98 nM in MT-4 cells for anti-HIV-1 activity[1]. 4'-Ethynyl-2'-deoxyadenosine is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

HIV-1

[1] Ohrui H, et al. 4'-C-substituted-2'-deoxynucleosides: a family of antiretroviral agents which are potent against drug-resistant HIV variants. Curr Drug Targets Infect Disord. 2001 May;1(1):1-10. DOI:10.2174/1568005013343218