M. Albrecht et al., New peptide labels containing covalently bonded platinum(II) centers as diagnostic biomarkers and biosensors, ORG LETT, 2(22), 2000, pp. 3461-3464
[GRAPHICS]
Water and acid resistant arylplatinum(ll) complexes have been covalently bo
nded to the N-terminus of L-valine, thus providing organometallic biomolecu
les with excellent stability properties. Owing to the Pt-195 nucleus (I = 1
/2), these building blocks are potentially versatile biomarkers (e.g., MRI)
, Moreover, they display efficient in vitro biosensor characteristics since
they detect SO2 gas selectively and fully reversibly by an instantaneous c
hange of the spectroscopic properties including a diagnostic Pt-195 NMR sig
nal.