| abstract |
Novel amino acid analogs are provided having the formula (I): Z-A3-A2-A1-Q, wherein Z is H or a protecting group; A3 and A2 are independently an optionally protected valine, leucine, alanine, isoleucine, phenylalnine, tyrosine, glycine, 2-arylglycine having either D or L stereochemistry or a chemical bond; A1 is an optionally protected valine, leucine, isoleucine, alanine, phenylalnine, tyrosine, 2-phenyl-glycine, 2phenethyl-glycine, 2-aryl-glycine; Q is H, CH2OCOL, CH2OL, CH2SL, CH2X, NHNHCOCH2OCOL, NHNHCOCH2OL, NHNHCOCH2SL, wherein L is an optionally substituted aryl or optionally substituted hereroaryl; and X is CI, Br or F, and a pharmaceutically acceptable salt thereof. |