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Two New Diphenylketones and a New Xanthone from Talaromyces islandicus EN-501, an Endophytic Fungus Derived from the Marine Red Alga Laurencia okamurai
Li, Hong-Lei1,2; Li, Xiao-Ming1; Liu, Hui1,2; Meng, Ling-Hong1; Wang, Bin-Gui1
2016-12-01
Source PublicationMARINE DRUGS
ISSN1660-3397
Volume14Issue:12Pages:8
Corresponding AuthorMeng, Ling-Hong(menglh@ms.qdio.ac.cn) ; Wang, Bin-Gui(wangbg@ms.qdio.ac.cn)
AbstractTwo new diphenylketones (1 and 2), a new xanthone (3), and a known xanthone analogue (4) were isolated and identified from Talaromyces islandicus EN-501, an endophytic fungus obtained from the fresh collected marine red alga Laurencia okamurai. Their structures were elucidated on the basis of NMR spectroscopic and X-ray crystallographic analysis. The joint isolation of benzophenones and xanthones from the same fungal strain supports the biogenesis of xanthones via a benzophenone intermediate. It is worth mentioning that xanthones 3 and 4 have a methyl group at C-6 and C-2, respectively, which is uncommon compared with typical xanthones usually having a methyl group at C-8. Compounds 1-4 exhibited potent antioxidative activities against DPPH (1,1-diphenyl-2-picrylhydrazyl) and ABTS (2,2-azino-bis(3-ethylbenzothiazoline-6-sulphonate) radicals with IC50 values ranging from 0.58 to 6.92 g/mL, which are stronger than that of the positive controls BHT (butylated hydroxytoluene) and ascorbic acid. Compounds 1, 3, and 4 also showed inhibitory activities against several pathogenic bacteria.
KeywordLaurencia okamurai Talaromyces islandicus diphenylketone xanthone antioxidative activity antibacterial activity
DOI10.3390/md14120223
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31330009] ; Scientific and Technological Innovation Project of Qingdao National Laboratory for Marine Science and Technology[2015ASKJ02] ; Taishan Scholar Project from Shandong Province
WOS Research AreaPharmacology & Pharmacy
WOS SubjectChemistry, Medicinal
WOS IDWOS:000392486100007
PublisherMDPI AG
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/157264
Collection实验海洋生物学重点实验室
Corresponding AuthorMeng, Ling-Hong; Wang, Bin-Gui
Affiliation1.Chinese Acad Sci, Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Key Lab Expt Marine Biol,Inst Oceanol, Nanhai Rd 7, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Yuquan Rd 19A, Beijing 100049, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Hong-Lei,Li, Xiao-Ming,Liu, Hui,et al. Two New Diphenylketones and a New Xanthone from Talaromyces islandicus EN-501, an Endophytic Fungus Derived from the Marine Red Alga Laurencia okamurai[J]. MARINE DRUGS,2016,14(12):8.
APA Li, Hong-Lei,Li, Xiao-Ming,Liu, Hui,Meng, Ling-Hong,&Wang, Bin-Gui.(2016).Two New Diphenylketones and a New Xanthone from Talaromyces islandicus EN-501, an Endophytic Fungus Derived from the Marine Red Alga Laurencia okamurai.MARINE DRUGS,14(12),8.
MLA Li, Hong-Lei,et al."Two New Diphenylketones and a New Xanthone from Talaromyces islandicus EN-501, an Endophytic Fungus Derived from the Marine Red Alga Laurencia okamurai".MARINE DRUGS 14.12(2016):8.
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