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  • Title: Synthesis and anti-HIV activity evaluation of novel 2,4-disubstituted 7-methyl-1,1,3-trioxo-2,4-dihydro-pyrazolo-[4,5-e][1,2]thiadiazines.
    Author: Liu XY, Yan RZ, Wang Y, Zhan P, De Clercq E, Pannecouque C, Witvrouw M, Molina MT, Vega S.
    Journal: Arch Pharm (Weinheim); 2008 Apr; 341(4):216-22. PubMed ID: 18266290.
    Abstract:
    A series of novel 2,4-disubstituted 7-methyl-1,1,3-trioxo-2,4-dihydro-pyrazolo[4,5-e] [1,2,4]thiadiazines (PTDs) was synthesized, structurally confirmed by spectral analysis, and evaluated for their anti-HIV activities by inhibition of HIV-induced cytopathogenicity in MT-4 cell culture. The results showed that some compounds exhibited inhibitory activity specifically against HIV-2 replication. The most active HIV-2 inhibitor was compound 7i (R1 = benzyl, R2 = 4-t-butyl-benzyl) with an EC50 value of 18.7 microM and SI=15, which may provide a useful lead for further molecular optimization.
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