Us20050009043a1 us10/798,692 us79869204a us2005009043a1 us 20050009043 a1 us20050009043 a1 us 20050009043a1 us 79869204 a us79869204 a us 79869204a us 2005009043 a1 us2005009043 a1 us 2005009043a1 authority us united states prior art keywords alkyl pmpa prodrugs amino independently prior art date 2000-07-21 legal status (the legal status is an assumption and is not a legal conclusion..