J 2017

Halogenated 1-Hydroxynaphthalene-2-Carboxanilides Affecting Photosynthetic Electron Transport in Photosystem II

GONĚC, Tomáš, J KOS, M PESKO, J DOHANOSOVA, M ORAVEC et. al.

Základní údaje

Originální název

Halogenated 1-Hydroxynaphthalene-2-Carboxanilides Affecting Photosynthetic Electron Transport in Photosystem II

Autoři

GONĚC, Tomáš, J KOS, M PESKO, J DOHANOSOVA, M ORAVEC, T LIPTAJ, K KRALOVA a J JAMPILEK

Vydání

Molecules, BASEL, Mayer und Muller, 2017, 1420-3049

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 3.098

UT WoS

000414670600136

Klíčová slova anglicky

hydroxynaphthalene-carboxamides; photosynthetic electron transport (PET) inhibition; spinach chloroplasts; structure-activity relationships

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 10. 3. 2021 00:00, PharmDr. Tomáš Goněc, Ph.D.

Anotace

V originále

Series of seventeen new multihalogenated 1-hydroxynaphthalene-2-carboxanilides was prepared and characterized. All the compounds were tested for their activity related to the inhibition of photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. 1-Hydroxy-N-phenylnaphthalene-2-carboxamides substituted in the anilide part by 3,5-dichloro-, 4-bromo-3-chloro-, 2,5-dibromo-and 3,4,5-trichloro atoms were the most potent PET inhibitors (IC50 = 5.2, 6.7, 7.6 and 8.0 mu M, respectively). The inhibitory activity of these compounds depends on the position and the type of halogen substituents, i.e., on lipophilicity and electronic properties of individual substituents of the anilide part of the molecule. Interactions of the studied compounds with chlorophyll a and aromatic amino acids present in pigment-protein complexes mainly in PS II were documented by fluorescence spectroscopy. The section between P-680 and plastoquinone Q(B) in the PET chain occurring on the acceptor side of PS II can be suggested as the site of action of the compounds. The structure-activity relationships are discussed.