Novel cyclopentadienyl ruthenium(II) complexes of biologically important compounds

Abstract
New cyclopentadienyl ruthenium complexes of tryptophol, N-acetyltryptamine, N-acetyl-L-tryptophan ethyl ester, N-acetyl-L-phenylalanine ethyl ester, and N-acetyl-L tyrosine ethyl ester were prepared by thermal ligand exchange reaction between cyclopentadienyl-tris(acetonitrile)ruthenium hexafluorophosphate and the substrate in 60–80% yields.