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A new 2H-benzindazole compound from Alternaria alternata Shm-1, an endophytic fungus isolated from the fresh wild fruit of Phellinus igniarius

  • Xiuli WuEmail author
  • Sa Wang
  • Cheng Liu
  • Caifang Zhang
  • Jinjing Guo
  • Xiaoya ShangEmail author
Note

Abstract

Endophytic fungi have been shown in recent years to produce a series of bioactive secondary metabolites. Several endophytic fungi were isolated from the fresh wild body of Phellinus igniarius, and initially evaluated for their antimicrobial activity. Among which, Shm-1 extract showed moderate inhibitory activity against Clavibacter michiganense and the fungus was identified to be Alternaria alternata Shm-1 through the comparison of morphological characteristics and the sequence of the rDNA ITS with those of other Alternaria species. A new 2H-benzindazole derivative, alterindazolin A (1), has been isolated from cultures of the endophyte Alternaria alternata Shm-1. Its structure was characterized as 1-benzyl-5-p-hydroxy-phenyloxygen-benz[e]indazole by spectroscopic data analysis including 1D NMR, 2D NMR and MS spectrum.

Keywords

Alternaria alternata Shm-1 Alterindazolin A Phellinus igniarius Antibacterial activity 

Notes

Acknowledgements

The authors are grateful to Prof. Z. G. Yue for the collection of fresh fruit of P. igniarius. The project was financially supported by the National Natural Science Foundation of China (NNSFC; Grant nos: 81260477 and 81560567).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11418_2019_1291_MOESM1_ESM.doc (1.3 mb)
Supplementary material 1 (DOC 1362 kb)

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Copyright information

© The Japanese Society of Pharmacognosy 2019

Authors and Affiliations

  1. 1.College of Pharmacy, Ningxia Engineering and Technology Research Center of Modern Hui Medicine, Key Laboratory of Hui Ethnic Medicine Modernization, Ministry of educationNingxia Medical UniversityYinchuanPeople’s Republic of China
  2. 2.Beijing Key Laboratory of Bioactive Substances and Functional FoodsBeijing Union UniversityBeijingPeople’s Republic of China

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