... (8) Imuta, M.; Zifter, H. J. Org. Chem. 1979, 44, 1351-1352. 0022-2623/90/ 1833-1620$02.50/ 0 0 1990 American Chemical Society Page 2. 0'-(Epoxyalky1)tyrosines and -phenylalanines E I \\\. _ . Journal of Medicinal Chemistry, 1990, Vol. 33, No. 6 1621 - [I] = .I6 .I ...