Products 6a and 6b may find potential as antibacterial and antiviral drugs since amino ethoxy group (NH2CH2CH2O-) is known as an important moiety in such drugs. Since both alcohols and thiols react with uridine-2-thio-1,3,2-dithiaphospholane, 3, a mixture of products 7a and 7b was expected in the reaction of 3 with mercaptoethanol.