Preparation and anti-HIV-1 activity of Thio Analogues of Dichydroalkoxybenzyloxopyrimidines
作者:Antonello Mai、Marino Artico、Gianluca Sbardella、Silvio Massa、Anna Giulia Loi、Enzo Tramontano、Patrizia Scano、Paolo La Colla
DOI:10.1021/jm00017a010
日期:1995.8
double methyl-substituted series, a more pronounced cytotoxicity was observed and the further introduction of a methyl at the 3'-position in the benzylidene group resulted in total loss of antiviral activity. S-DABOs, namely 2-(alkylthio)-6-benzyl-3,4-dihydro-4-oxopyrimidines, were synthesized by reacting proper methyl (phenylacetyl)acetates or their 2-methyl compounds with thiourea to afford 6-benzyl-4-oxo-1
二氢烷氧基苄基氧嘧啶(DABOs),一种新型的非核苷类逆转录酶抑制剂的各种硫代类似物,在体外选择性地抑制了HIV-1的繁殖。在C-5 H取代的6-苄基-3,4-二氢-4-氧嘧啶中,在嘧啶环的C-2处引入烷硫基或环烷硫基取代基导致衍生物(S-DABO)最多达到10个-强于烷氧基或环烷氧基的对应物。在2-(烷硫基)-6-苄基尿嘧啶的苄基部分的3'-位处进一步引入甲基,降低了细胞毒性,从而导致更具选择性的化合物。在C-5甲基取代的S-DABO中,许多衍生物显示的EC50值低至0.6 microM,并且在高至300 microM的剂量下没有细胞毒性。在C-5双甲基取代的系列中,观察到更明显的细胞毒性,并且在亚苄基的3'-位处进一步引入甲基导致抗病毒活性完全丧失。S-DABO,即2-(烷硫基)-6-苄基-3,4-二氢-4-氧嘧啶,是通过使适当的(苯基乙酰基)乙酸甲酯或它们的2-甲基化合物与硫脲反应生成6-苄基-4合成的-氧代-1