海洋真菌Phaeosphaeriopsis sp. ZYX-Z-811次生代谢产物研究
全苗苗(1997—), 女, 湖南省衡阳市人, 硕士研究生, 研究方向为海洋微生物。email: |
Copy editor: 殷波
收稿日期: 2023-07-10
修回日期: 2023-08-25
网络出版日期: 2023-09-07
基金资助
农业农村部财政专项项目(NFZX2021)
财政部和农业农村部国家现代农业产业技术体系专项(CARS-21)
社会公益类科研机构改革专项(ITBBQDF2023004)
Study on the secondary metabolites of marine fungus Phaeospheriopsis sp. ZYX-Z-811
Copy editor: YIN Bo
Received date: 2023-07-10
Revised date: 2023-08-25
Online published: 2023-09-07
Supported by
Special Finance Project of Ministry of Agriculture and Rural Affairs(NFZX2021)
Special Project of the Ministry of Finance and the Ministry of Agriculture and Rural Affairs on the National Modern Agricultural Industrial Technology System(CARS-21)
Special projects for the reform of public scientific research institutions(ITBBQDF2023004)
对海洋真菌Phaeosphaeriopsis sp. ZYX-Z-811发酵液中次生代谢产物进行分离鉴定, 并评价其生物活性。采用正相硅胶柱色谱、反向C18柱色谱、高效液相色谱、SephadexLH-20凝胶柱色谱等技术进行分离纯化, 共分离得到10个化合物, 利用核磁及红外和紫外波谱技术对分离的单体化合物进行结构鉴定, 分别为4-epi-lignicol (1)、lignicol (2)、6-demethylkigelin (3)、6,8-dihydroxy-3,4,7-trimethylisocoumarin (4)、6,7-dimethoxymellein (5)、musaone A (6)、2-(4-hydroxyphenyl)ethylacetate (7)、3-吲哚甲醛 (8)、吲哚-3-乙酸甲酯 (9)、对羟基苯甲酸甲酯(10), 其中化合物1为未发表的化合物, 文章通过电子圆二色谱(electrostatic circular dichroism, ECD)计算确定了其绝对构型。对这些化合物分别进行抗氧化和α-糖苷酶抑制活性评价, 发现化合物10有弱的抗氧化活性。
关键词: 海洋真菌; Phaeosphaeriopsis sp.; 次生代谢产物; 生物活性
全苗苗 , 马青云 , 杨理 , 谢晴宜 , 戴好富 , 郝玉娥 , 赵友兴 . 海洋真菌Phaeosphaeriopsis sp. ZYX-Z-811次生代谢产物研究[J]. 热带海洋学报, 2024 , 43(2) : 121 -127 . DOI: 10.11978/2023095
The secondary metabolites of marine fungus Phaeosporiopsis sp. ZYX-Z-811 were isolated and identified, and their biological activities were evaluated. The compounds were separated and purified by Silica gel, C18, Sephadex LH-20 column chromatography and high performance liquid chromatography (HPLC), ten compounds were separated, and their structures were identified by NMR, IR and UV spectroscopic methods. Ten compounds were identified as 4-epi-lignicol (1), lignicol (2), 6-demethylkigelin (3), 6, 8-dihydroxy-3, 4, 7-trimethylisocoumarin (4), 6, 7-dimethoxymellein (5), musaone A (6), 2-(4-hydroxyphenyl)ethylacetate (7), 3-indole formaldehyde (8), indole-3-acetic acid methyl ester (9), methyl p-hydroxybenzoate (10), among which compound 1 was not published in journal, and the absolute configuration was determined by ECD calculation. These compounds were evaluated for antioxidant activity and α-glucosidase in hibitoryactivity, respectively, compound 10 showed weak antioxidant activities.
表1 化合物1和化合物2的1H-和13C-NMR数据(500MHz、125MHz, DMSO-d6)Tab. 1 1H- and 13C-NMR data of compound 1 and compound 2 (500/125 MHz, DMSO-d6) |
碳位 | 化合物1 | 化合物2 | ||
---|---|---|---|---|
δC | δH | δC | δH | |
1 | 169.3 | 169.0 | ||
3 | 78.1 | 4.63, qd (J=6.5, 2.0Hz) | 80.0 | 4.45, m |
4 | 65.2 | 4.34, d (J=2.1Hz) | 67.7 | 4.38, d (J=5.2Hz) |
5 | 138.2 | 139.8 | ||
6 | 107.4 | 6.46, s | 105.8 | 6.65, s |
7 | 157.0 | 158.0 | ||
8 | 134.5 | 134.4 | ||
9 | 155.6 | 156.0 | ||
10 | 99.9 | 99.6 | ||
11 | 15.8 | 1.35, d (J=6.5Hz) | 18.1 | 1.35, d (J=6.0Hz) |
12 | 59.9 | 3.71, s | 60.3 | 3.70, s |
注: s: 单峰; m: 三重峰; d: 双重峰; qd: 四重峰; J: 耦合常数。空白表示季碳(没有连氢) |
图2 化合物1的1H-1HCOSY和HMBC (a)、ROESY (b)相关信号Fig. 2 Key 1H-1HCOSY, HMBC (a) and ROESY (b) correlations of compound 1 |
表2 化合物1~10对DPPH清除率Tab.2 DPPH clearance rate of compounds 1 ~ 10 |
化合物 | 清除率/% |
---|---|
4-epi-lignicol | 25.2 |
lignicol | 12.7 |
6-demethylkigelin | 16.2 |
6,8-dihydroxy-3,4,7-trimethylisocoumarin | 17.8 |
6,7-dimethoxymellein | 25.8 |
musaone A | 6.9 |
2-(4-hydroxyphenyl)ethylacetate | 25.8 |
3-吲哚甲醛 | 18.9 |
吲哚-3-乙酸甲酯 | 2.1 |
对羟基苯甲酸甲酯 | 50.6 |
抗坏血酸 | 96.8 |
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