- Antiproliferative effect and apoptotic activity of linear geranylphenol derivatives from phloroglucinol and orcinol
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Sixteen synthetic linear derivatives geranylphenols, were obtained from phloroglucinol and orcinol, and cytotoxic activity was evaluated in vitro against cancer cell lines (HT-29, PC-3, MDA-MB231, DU-145) and one non-tumor cell line, human dermal fibrobla
- Taborga, Lautaro,Espinoza, Luis,Moller, Alejandra,Carrasco, Héctor,Cuellar, Mauricio,Villena, Joan
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- 2-Prenylated m-dimethoxybenzenes as potent inhibitors of 15-lipo-oxygenase: inhibitory mechanism and SAR studies
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15-lipo-oxygenases are one of the iron-containing proteins capable of performing peroxidation of unsaturated fatty acids in animals and plants. The critical role of enzymes in the formation of inflammations, sensitivities, and some cancers has been demonstrated in mammals. The importance of enzymes has led to the development of mechanistic studies, product analysis, and synthesis of inhibitors. In this study, a series of allyl and prenyl dimethoxybenzenes were synthesized and their inhibitory potency against soybean 15-Lipo-oxygenase (L1; EC 1,13,11,12) was determined. Among the synthetic compounds, 2,6-dimethoxy-1-isopentenyl-4-methylbenzene, 2,6-dimethoxy-1-geranyl-4-methylbenzene, and 2,6-dimethoxy-1-farnesyl-4-methylbenzene showed the most potent inhibitory activity with IC50 values of 7.6, 5.3, and 0.52?μm, respectively. For some of the compounds, SAR studies showed acceptable relationship between inhibitory potency and enzyme–ligand interactions. Radical scavenging assessment results apart from the SAR studies indicate that electronic properties are the major factors for lipo-oxygenase inhibition potency of the mentioned compounds. Based on the theoretical studies, it was suggested that CH…O intramolecular hydrogen bond between ortho-methoxy oxygen and methine hydrogen atoms is one of the major factors in the stability of 2,6-dimethoxyallyl(or prenyl)benzenes radical via the planarity fixation between phenyl and allyl (or prenyl) pi orbitals.
- Jabbari, Atena,Sadeghian, Hamid,Salimi, Alireza,Mousavian, Mina,Seyedi, Seyed M.,Bakavoli, Mehdi
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p. 460 - 469
(2016/10/19)
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- A general approach for the synthesis of phenolic natural products. Facile syntheses of grifolin and colletochlorins B and D
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A general approach is established for the synthesis of phenolic compounds having terpenoid side chains: (1) protection of the phenolic hydroxyls in the aromatic precursor by ether formation, (2) coupling the aromatic part with a terpenoid bromide, and (3) deprotection to regenerate the hydroxyl groups. This strategy was successfully applied to the synthesis of colletochlorins B and D and grifolin. Some of the colletochlorin derivatives were found to inhibit the cell growth of P388.
- Saimoto,Ueda,Sashiwa,Shigemasa,Hiyama
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p. 1178 - 1185
(2007/10/02)
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- AN EFFICIENT REGIO- AND STEREOSPECIFIC ALKENYLATION OF PHENOLIC ETHERS BY PRENYL AND GERANYL DIISOPROPYL PHOSPHATES
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Prenyl and geranyl diisopropyl phosphates readily alkenylate a variety of phenolic ethers regio- and stereospecifically without any appreciable side reactions.
- Araki, Shuki,Manabe, Shin-ichi,Butsugan, Yasuo
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p. 797 - 800
(2007/10/02)
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