[关键词]
[摘要]
目的 研究一株毛壳属内生真菌Chaetomium sp. 的次生代谢产物。方法 采用硅胶、凝胶和半制备等多种色谱方法进行分离纯化,根据波谱学数据鉴定化合物结构。结果 从发酵提取物中共分离得到10个化合物,分别鉴定为chetoseminudin B(1)、gonytolide C(2)、chaetone D(3)、1H-indole-3-carbaldehyde(4)、1H-吲哚-3-羧酸(5)、indole-3- methylethanoate(6)、3R*,4R*-二羟基-3-甲基戊烷-2-酮(7)、大黄素(8)、3β,5α,9α-trihydroxy-(22E,24R)-ergosta-7,22-dien-6-one(9)、(3β,5α,6β,22E)-6-methoxyergosta-7,22-diene-3,5-diol(10)。结论 化合物1~10均为首次从该菌种中分离得到。
[Key word]
[Abstract]
Objective To study the secondary metabolites of endophytic fungus Chaetomium sp. Methods The compounds were isolated and purified by chromatographic methods on silica gel, Sephadex-LH20 columns, and semi-prep HPLC. The structures were established on the basis of spectroscopic data interpretation. Results Ten compounds were isolated and identified as chetoseminudin B (1), gonytolide C (2), chaetone D (3), 1H-indole-3-carbaldehyde (4), 1H-indole-3-carboxylic acid (5), indole-3-methylethanoate (6), 3R*,4R*-dihydroxy-3-methylpentan-2-one (7), emodin (8), 3β,5α,9α-trihydroxy-(22E,24R)-ergosta-7,22-dien-6-one (9), and (3β,5α, 6β,22E)-6-methoxyergosta-7,22-diene-3,5-diol (10). Conclusion All compounds are isolated from Chaetomium sp. for the first time.
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[基金项目]
国家自然科学基金资助项目(31670351,31400298);武汉市应用基础研究计划项目(2015061701011620);湖北省自然科学基金项目(2012FFA106)