22733-60-4Cc1cc(O)c2c(c1)O[C@@]1(C)CC[C@H]3C(C)(C)CCC[C@]34CO[C@@H]2[C@H]41UGGAILYEBCSZIV-ITJSPEIASA-NSiccanin is an organic heteropentacyclic compound. It has a role as a fungal metabolite and an antifungal drug.
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解説C22H30O3(342.47).シッカニンは,病原真菌Helminthosporium siccans BH-34株の培養液から分離された抗真菌抗生物質.白色~淡黄色の結晶.融点138~142 ℃.[α]20D-136°(クロロホルム).λmax 210,285 nm(エタノール).pKa 10.9.水に不溶,有機溶媒に可溶.白癬(水虫)治療薬として使用される.LD50 > 1000 mg/kg(ラット,経口).森北出版「化学辞典(第2版)
説明Siccanin is an inhibitor of mitochondrial complex II (succinate dehydrogenase; IC50s = 0.87 and 9.3 μM for P. aeruginosa and rat mitochondria, respectively). It inhibits the growth of T. mentagrophytes (IC50 = 0.3 μg/ml) via inhibition of succinate oxidation in the mitochondria. It also inhibits the growth of C. albicans strains with IC50 values ranging from 5-40 and 80-90 μg/ml for aerobic and anaerobic conditions, respectively.
使用Siccanin is an unusual, fused, phenolic pentacycle first isolated from Helminthosporium siccans and reported in 1962 as a potent antifungal agent. Siccanin inhibits succinate dehydrogenase in the terminal electron transport system. More recent studies note the proximity of the siccanin binding site to the quinone-binding site of the enzyme. Species-selective inhibition by siccanin is unique among succinate dehydrogenase inhibitors and offers a lead for new chemotherapeutics.
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22733-60-4CHEMBL3989494CHEBI:32128