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题名: Brocaeloids A-C, 4-Oxoquinoline and Indole Alkaloids with C-2 Reversed Prenylation from the Mangrove-Derived Endophytic Fungus Penicillium brocae
作者: Zhang Peng(张鹏)1,2; Meng LingHong(孟令红)1,2; Mandi, Attila3; Kurtan, Tibor3; Li, Xiao-Ming1; Liu, Yang1,2; Li, Xin1,2; Li, Chun-Shun1; Wang, BinGui(王斌贵)1
刊名: EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
出版日期: 2014-07-01
期号: 19, 页码:4029-4036
关键词: Natural products ; Alkaloids ; Circular dichroism ; Density functional calculations
学科分类: Chemistry
DOI: 10.1002/ejoc.201400067
通讯作者: Kurtan, T (reprint author), Debrecen Univ Med, Dept Organ Chem, POB 20, H-4010 Debrecen, Hungary.
文章类型: Article
英文摘要: Three new alkaloids, brocaeloids A-C (1-3), containing C-2 reversed prenylation, were isolated from cultures of Penicillium brocae MA-192, an endophytic fungus obtained from the fresh leaves of the marine mangrove plant Avicennia marina. Their structures were determined on the basis of 1D and 2D NMR spectroscopy as well as by high-resolution mass spectrometry. The absolute configuration of brocaeloid A (1) was established by gas-phase and solution conformational analysis and TDDFT-ECD calculations, which revealed that the fused hetero-ring adopted M-helicity conformation with axial orientation of the C-2 and C-3 substituents. The correct assignment of the hetero-ring conformation was found to be crucial in determining the relative and absolute configuration. Based on ECD calculations, the helicity of the 2,3-dihydroquinoline-4(1H)-one chromophore was correlated with the characteristic ECD transitions, and the resultant helicity rule was found to coincide with that of the chroman-4-one chromophore. X-ray single-crystal analysis of 1 by Cu-K-alpha radiation also confirmed the result of the stereochemical analysis obtained from ECD calculations. Brocaeloid B (2) showed lethality against brine shrimp (Artemia salina) with an LD50 value of 36.7 mu M.
收录类别: SCI ; IC
语种: 英语
WOS记录号: WOS:000338018400010
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.qdio.ac.cn/handle/337002/24079
Appears in Collections:实验海洋生物学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Debrecen Univ Med, Dept Organ Chem, H-4010 Debrecen, Hungary
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文件名: Brocaeloids A-C, 4-Oxoquinoline and Indole Alkaloids with C-2 Reversed Prenylation from the Mangrove-Derived Endophytic Fungus Penicillium brocae.pdf
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