Blocking oestradiol synthesis pathways with potent and selective coumarin derivatives
作者:Sanna Niinivehmas、Pekka A. Postila、Sanna Rauhamäki、Elangovan Manivannan、Sami Kortet、Mira Ahinko、Pasi Huuskonen、Niina Nyberg、Pasi Koskimies、Sakari Lätti、Elina Multamäki、Risto O. Juvonen、Hannu Raunio、Markku Pasanen、Juhani Huuskonen、Olli T. Pentikäinen
DOI:10.1080/14756366.2018.1452919
日期:2018.1.1
cytochrome P450 1A2, and monoamine oxidases. Most of the analogues are only modestly active with 17-β-hydroxysteroid dehydrogenase 2 - a requirement for lowering effective oestradiol levels in vivo. Moreover, the analysis led to the synthesis and discovery of 3-imidazolecoumarin as a potent aromatase inhibitor. In short, coumarin core can be tailored with specific ring and polar moiety substitutions to block
Development of new Coumarin-based profluorescent substrates for human cytochrome P450 enzymes
作者:Risto O. Juvonen、Mira Ahinko、Juhani Huuskonen、Hannu Raunio、Olli T. Pentikäinen
DOI:10.1080/00498254.2018.1530399
日期:2019.9.2
metabolites by CYP1 family enzymes, with 6-methoxy-3-(4-trifluoromethylphenyl)coumarin being oxidized selectively by CYP1A2 in human liver microsomes. Another set of four compounds were metabolized by CYP2A6 and CYP1 enzymes. 7-Methoxy-3-(3-methoxyphenyl)coumarin was oxidized efficiently by CYP2C19 and CYP2D6 in a non-selective fashion. The advantages of the novel substrates were (1) an excellent signal-to-background
A series of 6-halo-3-hydroxyphenylcoumarins (resveratrol-coumarins hybrid derivatives) was synthesized in good yields by a Perkin reaction followed by hydrolysis. The new compounds were evaluated for their vasorelaxant activity in intact rat aorta rings pre-contracted with phenylephrine (PE), as well as for their inhibitory effects on platelet aggregation induced by thrombin in washed human platelets. These compounds concentration-dependently relaxed vascular smooth muscle and some of them showed a platelet antiaggregatory activity that was up to thirty times higher than that shown by trans-resveratrol and some other previously synthesized derivatives.
Monoamine Oxidase (MAO) Inhibitory Activity: 3-Phenylcoumarins versus 4-Hydroxy-3-phenylcoumarins
作者:Giovanna L. Delogu、Silvia Serra、Elias Quezada、Eugenio Uriarte、Santiago Vilar、Nicholas P. Tatonetti、Dolores Viña
DOI:10.1002/cmdc.201402010
日期:2014.4.29
MAO‐A and MAO‐B. Most of the compounds tested acted preferentially on MAO‐B, with IC50 values in the micromolar to nanomolar range. Only 6‐chloro‐4‐hydroxy‐3‐(2’‐hydroxyphenyl)coumarin exhibited activity against the MAO‐A isoform, while still retaining good selectivity for MAO‐B. 6‐Chloro‐3‐phenylcoumarins unsubstituted at the 4 position were found to be more active as MAO‐B inhibitors than the corresponding