145031-51-2 AIDS-045153 AIDS045153 Cbz-Tyr-Val-{Tyr}Sta-Ala-Sta-OMe L-threo-Pentonamide, 2,4,5-trideoxy-N-[2-[[2-hydroxy-4-methoxy-1-(2-methylpropyl)-4-oxobutyl]amino]-1-methyl-2-oxoethyl]-4-C-(4-hydroxyphenyl)-4-[[N-[N-[(phenylmethoxy)carbonyl]-L-tyrosyl]-L-valyl]amino]-, [1S-[1R*(R*),2R*]]- Pepstatin A, 1-[N-[(phenylmethoxy)carbonyl]-L-tyrosine]-3-[4-amino-2,4,5-trideoxy-4-C-(4-hydroxyphenyl)-L-threo-pentonic acid]-, methyl ester