??????? ??? ???(???????)????? ??-???-N-??? ? ?? ? 6-??? ???? METHYL 4-(4-AMINOPHENYL)BUTANOATE 4-(4-Aminophenyl)butyric acid BOC-PEN(MOB)-OH S-Benzyl-L-Penicillamine N-tert-Butyloxycarbonyl-S-(4-methylbenzyl)-D-penicillamine dicyclohexylamine (2R,3S)-2-Amino-3-(benzylthio)butanoic acid Fmoc-S-Trityl-L-penicillamine H-PEN(TRT)-OH BOC-PEN(TRT)-OH FMOC-PEN(4-MEOBZL)-OH H-BETA,BETA-DIMETHYL-L-CYS(PMEOBZL)-OH H-BETA,BETA-DIMETHYL-L-CYS(PMEBZL)-OH