New Metabolites from Endophytic Fungus Chaetomium globosum CDW7.

New Metabolites from Endophytic Fungus Chaetomium globosum CDW7.
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内生真菌球毛壳菌 CDW7 的新代谢物

DOI:
10.3390/molecules23112873
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发表时间:
2018-11-04
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Ye YH
Ye YH
中科院分区:
其他
文献类型:
--
作者:
Yan W;Cao LL;Zhang YY;Zhao R;Zhao SS;Khan B;Ye YH

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从内生真菌球毛壳菌CDW7中分离得到5种代谢产物,其中包括2个新化合物原青绿素A(1)和吲哚内酯A(2)。化合物1和2分别为异香豆素和吲哚生物碱衍生物,其结构经高分辨电喷雾电离质谱仪(HR-ESI-MS)、核磁共振和圆二色谱(CD)等波谱分析确证。化合物3-5分别鉴定为草青素A、毛球蛋白R和毛球蛋白T。柴胡绿素A(3)对核盘菌具有一定的抗真菌活性,其EC50值为1.97μg/mL。体内试验表明,2 0 0μg/mL3对油菜菌核病的防效为6 4.3%,与多菌灵相当(6 9.2%)。
Five metabolites including two new ones, prochaetoviridin A (1) and chaetoindolin A (2), were isolated from the endophytic fungus Chaetomium globosum CDW7. Compounds 1 and 2 were characterized as an isocoumarin and an indole alkaloid derivative, respectively, with their structures elucidated by comprehensive spectroscopic analyses including high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), NMR, and circular dichroism (CD) comparison. Compounds 3–5 were identified as chaetoviridin A, chaetoglobosin R, and chaetoglobosin T, respectively. Chaetoviridin A (3) exhibited antifungal activity against Sclerotinia sclerotiorum with an EC50 value of 1.97 μg/mL. In vivo test showed that 3 displayed a protective efficacy of 64.3% against rape Sclerotinia rot at the dosage of 200 μg/mL, comparable to that of carbendazim (69.2%).
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