Crystal structures of three platinacyclic complexes bearing isopropyl eugenoxyacetate and pyridine derivatives.
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ABSTRACT: Three new platinum(II) complexes bearing a eugenol and a pyridine derivative, namely (?2-2-allyl-4-meth-oxy-5-{[(propan-2-yl-oxy)carbon-yl]meth-oxy}phenyl-?C 1)chlorido-(pyridine-?N)platinum(II), [Pt(C15H19O4)Cl(C5H5N)], (I), (?2-2-allyl-4-meth-oxy-5-{[(propan-2-yl-oxy)carbon-yl]meth-oxy}phenyl-?C 1)chlorido-(4-methyl-pyridine-?N)platinum(II), [Pt(C15H19O4)Cl(C6H7N)], (II), and (?2-2-allyl-4-meth-oxy-5-{[(propan-2-yl-oxy)carbon-yl]meth-oxy}phenyl-?C 1)chlorido(pyridine-4-carb-oxy-lic acid-?N)platinum(II), [Pt(C15H19O4)Cl(C6H5NO2)], (III), have been synthesized and further characterized by single-crystal X-ray diffraction. The PtII atoms exhibit the usual distorted square-planar coordination and are surrounded by one Cl atom, one N atom, and a C atom and C=C double bond of the eugenol ligand. The donor N atom of the pyridine ligand occupies a cis position with respect to the double bond. Complexes (I) and (II) crystallize isomorphously in space group P and display a similar crystal packing characterized by C-H?O hydrogen bonding, C-H?? and ?-? inter-actions. However, the presence of the additional methyl group in the 4-methyl-pyridine ligand in (II) disturbs the ?-? inter-actions. The crystal packing of (III) is characterized by O-H?O hydrogen bonding, resulting in the formation of chains of mol-ecules connected in a head-to-tail fashion and running in the [101] direction. The IC50 values for the HepG2 and KB cell lines are 150.9, 122.3?µM for (I) and 138.9, 93.2?µM for (II), respectively.
SUBMITTER: Chi NTT
PROVIDER: S-EPMC7336793 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
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