SYNTHESIS OF DERIVATIVES CONTAINING PLANT GROWTH REGULATOR MOIETY AND NITROXYL RADICAL MOIETY
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Abstract:
Nine new derivatives containing plant growth regulator moietyand nitroxyl radical moiety were synthesized. Preliminary tests showed that thecompounds 14a, b, 15c, and 16 possessed in vitro inhibitory activity against P388leukemia cell.Keywords:
Moiety
Nitroxyl
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A set of new heteroquinone derivatives bearing two methoxycarbonylmethylthio groups on the benzoquinone ring were synthesized and evaluated for CDC25B phosphatase inhibitory activity. All compounds inhibited the enzyme with IC 50 values in the micromolar range regardless of the size and heteroatoms constituting the heterocycle fused to the quinone ring. Moreover, these quinonoid-based compounds showed moderate antiproliferative activity toward two cancer cell lines (HeLa and MiaPaca-2). These results provide additional data for CDC25 inhibition by quinone-type derivatives and highlight the importance of substituents on the quinonic moiety.
Moiety
Heteroatom
HeLa
Benzoquinone
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Analogues of previously studied phenyl-substituted aminomethylene-bisphosphonic acids were synthesized and evaluated as inhibitors of Arabidopsis thaliana δ(1)-pyrroline-5-carboxylate reductase. With the aim of improving their effectiveness, two main modifications were introduced into the inhibitory scaffold: the aminomethylenebisphosphonic moiety was replaced with a hydroxymethylenebisphosphonic group, and the length of the molecule was increased by replacing the methylene linker with an ethylidene chain. In addition, chlorine atoms in the phenyl ring were replaced with various other substituents. Most of the studied derivatives showed activity in the micromolar to millimolar range, with two of them being more effective than the lead compound, with concentrations inhibiting 50% of enzyme activity as low as 50 μM. Experimental evidence supporting the ability of these inhibitors to interfere with proline synthesis in vivo is also shown.
Moiety
Pyrroline
Carboxylate
Methylene
Linker
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