BMS Derivatives C7-Linked to β-Cyclodextrin and Hyperbranched Polyglycerol Retain Activity against R5-HIV-1NLAD8 Isolates and Can Be Deemed Potential Microbicides

Abstract

Amides from indole-3-glyoxylic acid and 4-benzoyl-2-methylpiperazine,which are related to entry inhibitors developed by Bristol-MyersSquibb (BMS), have been synthesized with aliphatic chains located at the C7 position of the indole ring.These spacers contain an azido group suitable for the well-known Cu(I)-catalyzed (3+2)-cycloaddition or an activated triple bond for the nucleophilic addition of thiols under physiological conditions.Reaction with polyols (β-cyclodextrin and hyperbranched polyglycerol) decorated with complementary click partners has afforded polyol-BMS-like conjugates that are not cytotoxic (TZM.bl cells) and retain the activity against R5HIV-1NLAD8 isolates.Thus, potential vaginal microbicides based on entry inhibitors, which can be called of 4th generation, are reported here for the first time.