(S)-2-[3-Azido-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethoxycarbonylamino]-3-(1H-indol-3-yl)-propionic acid methyl ester 3'-Azido-2',3'-didehydro-5'-O-methoxy-L-tryptophanyl thymidine AIDS-092507 AIDS092507 Amino acid carbamate deriv