Monoamine oxidase inhibitory activities of novel 3,4-dihydroquinolin-(1H)-2-one derivatives

Sunal S. G. , Yabanoglu S., Yesilada A., Ucar G.

JOURNAL OF NEURAL TRANSMISSION, cilt.114, sa.6, ss.717-719, 2007 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 114 Konu: 6
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1007/s00702-007-0677-9
  • Sayfa Sayıları: ss.717-719


Three 3,4-dihydroquinoline-(1H)-2-one derivatives were synthesized and their monoamine oxidase (MAO) inhibitory activities were evaluated. The calculated IC50 values revealed that compound Q (N-amino-3,4-dihydroquinoline-(1H)-2-one), which carries a free amine group in the molecule, inhibited rat liver MAO-B competitively and reversibly suggesting that this relatively small compound may interact with the active site channel of the enzyme while the compounds QB (1-(benzlyden-amino)-3,4-dihydroquinoline-(1H)-2-one), PCN (2-(3-cyano-2-oxo-4-phenyl-2H-quinolin-1-yl-N-cyclohexyl-2-(4'-chlorophenyl) acetamide) and MG (tert-butyl-N-[cyclohexylcarbamoyl-(3-hydroxyphenyl)methyl]-N-(2-benzoylphenyl)-carbamate) inhibited rat liver MAO-B non-competitively and irreversibly, suggesting that these compounds may interact with another hydrophobic binding region outside of the active site of the enzyme.