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Natural Product Research
Formerly Natural Product Letters
Volume 34, 2020 - Issue 10
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Research Articles

A new antimicrobial sesquiterpene isolated from endophytic fungus Cytospora sp. from the Chinese mangrove plant Ceriops tagal

Qin DengKey Laboratory of Tropical Biological Resources of Ministry of Education, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, P. R. China;
,
Gang LiKey Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
,
Mengyu SunKey Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
,
Xiaobo YangKey Laboratory of Tropical Biological Resources of Ministry of Education, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, P. R. China; Correspondence[email protected] Jing Xu [email protected]
&
Jing XuKey Laboratory of Tropical Biological Resources of Ministry of Education, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, P. R. China; ;Key Laboratory of Advanced Materials of Tropical Island Resources of Ministry of Education, College of Material and Chemical Engineering, Hainan University, Haikou, P. R. China
Pages 1404-1408 | Received 09 Jun 2018, Accepted 14 Aug 2018, Published online: 10 Nov 2018
 
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Abstract

Chemical examination of Chinese mangrove Ceriops tagal endophytic Cytospora sp., yielded a new biscyclic sesquiterpene seiricardine D (1), and eight known metabolites, xylariterpenoid A (2a), xylariterpenoid B (2b) and regiolone (3) 4-hydroxyphenethyl alcohol (4), (22E, 24R)5, 8-epidioxy-5α, 8α-ergosta-6,22E-dien-3ß-ol (5), (22E, 24R)5, 8-epidioxy-5α, 8α-ergosta-6,9(11), 22-trien-3 ß-ol (6), ß-sitosterol (7) and stigmast-4-en-3-one (8). These structures were unambiguously elucidated on the basis of extensive NMR spectroscopic and mass spectrometric analyses. The antimicrobial activities of compounds 1–8 and their effects on a panel of plant and human pathogens were evaluated.

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