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首页> 外文期刊>The Journal of Antibiotics: An International Journal >Additional alpha-glucosidase inhibitors from Malbranchea flavorosea (Leotiomycetes, Ascomycota)
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Additional alpha-glucosidase inhibitors from Malbranchea flavorosea (Leotiomycetes, Ascomycota)

机译:来自Malbranchea Flavorosea的另外的α-葡糖苷酶抑制剂(Leotiomycetes,Ascomycota)

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摘要

From the rice-based culture of Malbranchea flavorosea, three new compounds namely flavoroseoside B (5-desoxy-5-chloroflavoroseoside) (2), 4-hydroxy-2-O-alpha-ribofuranosyl-5-methylacetophenone (3), and (S)-3,4-dihydro-3-(1H-indol-3-ylmethyl)- 4-methyl-1H-1,4-benzodiazepine-2,5-dione (4), along with three known compounds, rosigenin (5), massarilactone B (6), and riboxylarinol B (7) were obtained. The structures were determined by spectroscopic methods. Compound 4 and its synthetic analog 3,4-dihydro-3-(1H-indol-3-ylmethyl)-1-methyl-1H-1,4-benzodiazepine-2,5-dione (9) inhibited the activity of Ruminococus obeum alpha-glucosidase enzyme. Molecular docking and dynamic studies revealed that compounds 4 and 9 might bind to this a-glucosidase at the catalytic center. Phylogenetic analysis using internal transcribed spacer region revealed that Malbranchea flavorosea ATCC 34529 is related to Myxotrichum spp.
机译:从以大米为基础的香荚海棠培养物中,获得了三种新化合物,即香荚苷B(5-去氧基-5-氯香荚苷)(2)、4-羟基-2-O-α-核糖呋喃酰基-5-甲基苯乙酮(3)和(S)-3,4-二氢-3-(1H-吲哚-3-基甲基)-4-甲基-1H-1,4-苯二氮杂-2,5-二酮(4),以及三种已知化合物,松香(5)、马沙利内酯B(6)和核糖海松醇B(7)。用光谱法测定了其结构。化合物4及其合成类似物3,4-二氢-3-(1H-吲哚-3-基甲基)-1-甲基-1H-1,4-苯二氮卓-2,5-二酮(9)抑制瘤胃大鼠α-葡萄糖苷酶的活性。分子对接和动力学研究表明,化合物4和9可能在催化中心与该α-葡萄糖苷酶结合。利用内部转录间隔区进行的系统发育分析表明,黄枝海棠ATCC 34529与粘菌属有关。

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