Page 1. NUCLEOSIDES & NUCLEOTIDES, 13(8), 1769-1777 (1994 ... Unique among these are 1-[(2- hydroxyethoxy)methyl]-6-(phenylthio)thymine (HEPT) and its analogues4 Although structurally related to the nucleoside antivirals, HEPT agents exert their anti-HIV-1 activity by ...