两株海南红树植物内生真菌的生物活性成分  

Bioactive components of endophytic fungi from two Hainan mangrove plants

作　　者：陈必婷 吴炜城 周董董 邓小林 张世清[2] 袁靖喆 徐静[1] 郭志凯[2,3] CHEN Biting;WU Weicheng;ZHOU Dongdong;DENG Xiaolin;ZHANG Shiqing;YUAN Jingzhe;XU Jing;GUO Zhikai(School of Chemical Engineering and Technology,Hainan University,Haikou 570228,Hainan Province,P.R.China;Hainan Key Laboratory of Tropical Microbe Resources,Institute of Tropical Bioscience and Biotechnology,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,Hainan Province,P.R.China;Hainan Key Laboratory of Conservation and Utilization of Tropical Agricultural Bioresources,Hainan Institute of Tropical Agricultural Resources,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,Hainan Province,P.R.China)

机构地区：[1]海南大学化学工程与技术学院,海南海口570228 [2]海南省热带微生物资源重点实验室,中国热带农业科学院热带生物技术研究所,海南海口571101 [3]海南省热带农业生物资源保护与利用重点实验室,中国热带农业科学院海南热带农业资源研究院,海南海口571101

出　　处：《深圳大学学报（理工版）》2022年第3期245-252,共8页Journal of Shenzhen University(Science and Engineering)

基　　金：中央公益性科研院所基本科研业务资助项目(1630052019011);海南省重点研发计划资助项目(ZDYF2021108);海南省重大科技计划资助项目(ZDKJ202008,ZDKJ202018);国家自然科学基金资助项目(81973229,82160675)。

摘　　要：红树植物内生真菌是新型天然产物先导药物的重要来源之一.为获得具有新颖结构的化合物,对两株红树内生真菌Phomopsis sp.DHS11和Aspergillus fumigatus JRJ111048的代谢产物进行研究.综合利用正/反相硅胶柱、Sephadex LH20凝胶柱和HPLC高效液相色谱法,从发酵提取物中分离得到9种化合物,分别记为化合物1~9.利用高分辨电喷雾质谱(high resolution electrospray ionization mass spectroscopy,HRESIMS)、核磁共振波谱(nuclear magnetic resonance spectroscopy,NMR)、旋光、紫外和红外光谱等技术,鉴定化合物1~9依次为norpestaphthalide C(1)、norpestaphthalide A(2-a)、norpestaphthalide B(2-b)、7-hydroxy-3-(2-hydroxy-propyl)-5-methyl-isochromen-1-one(3)、alternaroside B(4)、细胞松驰素B(5)、啤酒甾醇(6)、5-羟甲基糠醛(7)、N-(4-羟基苯乙基)-乙酰胺(8)和3,5-dihydroxybenzoic acid(9).其中,化合物1为首次发现的新型苯并呋喃酮类化合物,化合物4是首次从Phomopsis sp.属真菌中分离得到的脑苷脂类化合物.对化合物1~9进行体外免疫抑制、抗肿瘤和抗老年痴呆活性评价,结果表明,细胞松弛素类化合物5具有良好的免疫抑制活性.研究结果为深入挖掘红树植物内生真菌新型生物活性物质提供了参考.Mangrove endophytic fungi are one of the important sources for discovering natural drug leads.In order to obtain natural compounds with novel structures,the metabolites of two mangrove endophytic fungi Phomopsis sp.DHS11 and Aspergillus fumigatus JRJ111048 were studied.As a result,nine compounds(1-9)were isolated from their fermentation extract by comprehensive silica gel,reverse phase silica gel,Sephadex LH20 column chromatography and high performance liquid chromatography(HPLC).The structures of these compounds were identified as norpestaphthalide C(1),norpestaphthalide A(2-a),norpestaphthalide B(2-b),7-hydroxy-3-(2-hydroxypropyl)-5-methyl-isochromen-1-one(3),alternaroside B(4),cytochalasin B(5),cerevisterol(6),5-hydroxymethylfuraldehyde(7),N-(4-hydroxyphenethyl)acetamide(8),3,5-dihydroxybenzoic acid(9)by using high resolution electrospray mass spectrometry(HRESIMS),nuclear magnetic resonance spectroscopy(NMR),optical rotation,ultraviolet,infrared spectroscopy techniques and comparing with reported data.Among them,compound 1 was a new benzofuranone-type natural compound discovered for the first time,and the compound 4 was a cerebroside-type natural product reported for the first time from Phomopsis sp.The immunosuppressive activity,antitumor activity and anti-Alzheimer’s activity of compounds 1-9 were evaluated.The result showed that compound 5 displayed good immunosuppressive activity.The research results provide new clues for the in-depth exploration of new bioactive substances in mangrove endophytes.

关 键 词：海洋化学 天然产物 红树植物 内生真菌 次级代谢产物 苯并呋喃酮 脑苷脂类 免疫抑制活性 

分 类 号：Q939.98[生物学—微生物学] R978.1[医药卫生—药品]