AIDS-060999 AIDS060999 Adenallene phosphamidate Methyl (R,S)-9-(4-hydroxy-1,2-butadien-1-yl)adenine (R,S)-4'-phenyphosphoryl-/P-.fwdarw.N/(S)-alaninate Methyl 2(S)-({[4-(6-aminopurin-9-yl)buta-2,3-dienyloxy]phenoxycarbonyl}amino)propanoate