- A novel selenoflavone compound as anti-obesity agent
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The present invention relates to a process for producing a novel selenoflavone compound and a pharmaceutical composition for preventing or treating obesity comprising the selenoflavone compound. In the present invention, selenoflavone, especially PMSF, which has never been synthesized due to synthetic difficulties can be synthesized through palladium-catalyzed direct C-H arylation. Since the synthesized selenoflavone has an improving effect related to activation of brown adipose tissue (BAT), the selenoflavone can be used in the composition for prevention and treatment of obesity.COPYRIGHT KIPO 2018
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Paragraph 0177; 0181; 0207; 0218-0220; 0222
(2018/12/01)
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- Efficient synthesis of polymethoxyselenoflavones via regioselective direct C-H arylation of selenochromones
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Substantial research has suggested that the configuration and the total number of functional groups on flavones influence their bioactivity. To investigate the changes in the biological activities of selenoflavones in relationship to structural changes, the development of a generally applicable synthetic method was a key. Until now, an efficient pathway for palladium-catalyzed direct arylation with the selenocyclic enone systems is not known in the literature. We herein introduce a simple direct C-H arylation of two difficult coupling partners, selenochromones and electron-rich aryl bromide, affording diverse polymethoxyselenoflavones with great efficiency and high selectivity.
- Yang, Woo-Ram,Choi, Yong-Sung,Jeong, Jin-Hyun
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supporting information
p. 3074 - 3083
(2017/04/10)
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- HERBICIDALLY ACTIVE (ALKYNYL-PHENYL)-SUBSTITUTED CYCLIC DIONE COMPOUNDS AND DERIVATIVES THEREOF
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The present invention relates to a compound of formula (I): wherein: X is methyl or chlorine; R1 is fluorine or bromine; R2 is ethynyl, C1-C3alkoxy, C1-C3haloalkoxy, or C1-C3alkoxy-C1-C3alkoxy-; and Q is a pyran-3,5-dione-4-yl, a thiopyran-3,5-dione-4-yl, a piperidine-3,5-dione-4-yl, a cyclopentane-1,3-dione-2-yl, a cyclohexane-1,3, 5-trione-2-yl, a cyclohexane-1,3-dione-2-yl, or a cycloheptane-1,3-dione-2-yl, or a derivative thereof (e.g. a fused such as fused bicyclic derivative, and/or a spirocyclic derivative), or an enol ketone tautomer derivative thereof, wherein Q is further defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. Preferably, X is methyl; and/or R1 is fluorine; and/or R2 is -O-R2A, wherein R2A is methyl, ethyl, trifluoromethyl, difluoromethyl, trifluoroethyl, or -CH2CH2OCH3. These compounds are suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the weeds and/or to the plants and/or to the locus thereof.
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Page/Page column 176-177
(2014/12/12)
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- HERBICIDALLY ACTIVE (ALKYNYL-PHENYL)-SUBSTITUTED CYCLIC DIONE COMPOUNDS AND DERIVATIVES THEREOF
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The present invention relates to a compound of formula (I): wherein: X is methyl or chlorine; R1 is fluorine or bromine; R2 is ethynyl, C1-C3alkoxy, C1-C3haloalkoxy, or C1-C3alkoxy-C1-C3alkoxy-; and Q is a pyran-3,5-dione-4-yl, a thiopyran-3,5-dione-4-yl, a piperidine-3,5-dione-4-yl, a cyclohexane-1,3,5-trione-2-yl, a cyclohexane-1,3-dione-2-yl, a cycloheptane-1,3-dione-2-yl, in which each cyclic dione is bridged by alkanediyl, or a derivative thereof (e.g. an enol ketone tautomer derivative thereof), wherein Q is further defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. Preferably, X is methyl; and/or R1 is fluorine; and/or R2 is -O-R2A, wherein R2A is methyl, ethyl, trifluoromethyl, difluoromethyl, trifluoroethyl, or -CH2CH2OCH3. These compounds are suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the weeds and/or to the plants and/or to the locus thereof.
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Page/Page column 121-122
(2014/12/12)
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- 7-alkyl-3-benzylcoumarins: A versatile scaffold for the development of potent and selective cannabinoid receptor agonists and antagonists
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A series of 7-alkyl-3-benzylcoumarins was designed, synthesized, and tested at cannabinoid CB1 and CB2 receptors in radioligand binding and cAMP accumulation studies. 7-Alkyl-3-benzylcoumarins were found to constitute a versatile scaffold for obtaining potent CB receptor ligands with high potency at either CB1 or CB2 and a broad spectrum of efficacies. Fine-tuning of compound properties was achieved by small modifications of the substitution pattern. The most potent compounds of the present series include 5-methoxy-3-(2-methylbenzyl)-7-pentyl-2H-chromen-2-one (19a, PSB-SB-1201), a selective CB1antagonist (Ki CB 1 0.022 μM), 5-methoxy-3-(2-methoxybenzyl)-7-pentyl-2H-chromen-2- one (21a, PSB-SB-1202), a dual CB1/CB2agonist (CB 1Ki 0.032 μM, EC50 0.056 μM; CB 2Ki 0.049 μM, EC50 0.014 μM), 5-hydroxy-3-(2-hydroxybenzyl)-7-(2-methyloct-2-yl)-2H-chromen-2-one (25b, PSB-SB-1203), a dual CB1/CB2 ligand that blocks CB 1 but activates CB2 receptors (CB1Ki 0.244 μM; CB2Ki 0.210 μM, EC50 0.054 μM), and 7-(1-butylcyclopentyl)-5-hydroxy-3-(2-hydroxybenzyl)-2H-chromen-2- one (27b, PSB-SB-1204), a selective CB2 receptor agonist (CB 1Ki 1.59 μM; CB2Ki 0.068 μM, EC50 0.048 μM).
- Rempel, Viktor,Volz, Nicole,Hinz, Sonja,Karcz, Tadeusz,Meliciani, Irene,Nieger, Martin,Wenzel, Wolfgang,Br?se, Stefan,Müller, Christa E.
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p. 7967 - 7977
(2012/11/07)
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