Synthesis and evaluation of verticipyrone analogues as mitochondrial complex I inhibitors
摘要:
Verticipyrone has recently been isolated from the culture broth of Verticillium sp. and shown to inhibit NADH fumarate reductase, as well as NADH oxidoreductase ( complex I) of the mitochondrial electron transport chain. In order to assess the structural elements in verticipyrone essential for complex I inhibitor, 15 structural analogues were prepared and analyzed for their effects on mitochondrial NADH oxidoreductase and NADH oxidase activities. Also measured were the abilities of several of the analogues to inhibit respiration as judged by a shift to glycolysis, and to inhibit the growth of several mammalian cell lines. The nature of the pyrone ring was shown to be important to potency of inhibition, as was the length and nature of substituents in the side chain of the analogues. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis and evaluation of verticipyrone analogues as mitochondrial complex I inhibitors
摘要:
Verticipyrone has recently been isolated from the culture broth of Verticillium sp. and shown to inhibit NADH fumarate reductase, as well as NADH oxidoreductase ( complex I) of the mitochondrial electron transport chain. In order to assess the structural elements in verticipyrone essential for complex I inhibitor, 15 structural analogues were prepared and analyzed for their effects on mitochondrial NADH oxidoreductase and NADH oxidase activities. Also measured were the abilities of several of the analogues to inhibit respiration as judged by a shift to glycolysis, and to inhibit the growth of several mammalian cell lines. The nature of the pyrone ring was shown to be important to potency of inhibition, as was the length and nature of substituents in the side chain of the analogues. (C) 2010 Elsevier Ltd. All rights reserved.
A convenient synthesis of alkylated 4-hydroxy-2-pyrones
作者:Eiji Suzuki、Haruo Sekizaki、Shoji Inoue
DOI:10.1039/c39730000568
日期:——
Various alkylated4-hydroxy-2-pyrones were synthesized from the βδ-diketo-esters (11), (13), and (14), which were easily prepared from the γδ-acetylenic β-keto-esters(3), (4), and (7)via the corresponding enamino-β-keto-esters (8)–(10).
Carboalumination/Ni-catalyzed couplings. A short synthesis of verticipyrone
作者:Bruce H. Lipshutz、Benjamin Amorelli
DOI:10.1016/j.tetlet.2009.02.167
日期:2009.5
Verticipyrone (1) has been synthesized in six overall steps from commercially available ethyl-2-methylacetoacetate. This represents the first successful application of a modified Negishi carboalumination nickel-catalyzed cross-coupling reaction to a chloromethylated pyrone. (C) 2009 Elsevier Ltd. All rights reserved.
SUZUKI E.; SEKIZAKI H.; INOUE S., J. CHEM. RES. SYNOP., 1977, NO 8, 200