- Anti-human immunodeficiency virus activity and cellular metabolism of a potential prodrug of the acyclic nucleoside phosphonate 9-R-(2-phosphonomethoxypropyl)adenine (PMPA), Bis(isopropyloxymethylcarbonyl)PMPA. Robbins, B.L., Srinivas, R.V., Kim, C., Bischofberger, N., Fridland, A. Antimicrob. Agents Chemother. (1998)