((3S,2R)-2-Methoxy(3,6-dihydro-2H-pyran-3-yloxy))-N-((1S,2S)-3-{(2S,4S)-2-[N-(tert-butyl)carbamoyl]-4-chloropyrrolidinyl}-2-hydroxy-3-oxo-1-benzylpropyl)carboxamide AHPBA deriv. AIDS-059662 AIDS059662 [5(S)-[6(R)-Methoxy-5,6-dihydro-2H-pyranyl]oxy]carbonyl-(2S,3S)-AHPBA-4(S)-Cl-Pro-NH-t-Bu