Antiviral Alkaloids Produced by the Mangrove-Derived Fungus Cladosporium sp PJX-41

作者:Peng, Jixing; Lin, Tao; Wang, Wei; Xin, Zhihong*; Zhu, Tianjiao; Gu, Qianqun; Li, Dehai
来源:Journal of Natural Products, 2013, 76(6): 1133-1140.
DOI:10.1021/np400200k

摘要

Six new indole alkaloids including five new glyantrypine derivatives (1, 2a, 2b, 3, 4) and a new pyrazinoquinazoline derivative (5), together with eight known alkaloids (6-13), were isolated from the culture of the mangrove-derived fungus Cladosporium sp. PJX-41. Their structures were elucidated primarily by spectroscopic and physical data. The absolute configurations of compounds 1-9 were established on the basis of CD, NOESY data, and single-crystal X-ray diffraction analysis. Compounds 2b, 5, 7-9, and 11 exhibited significant activities against influenza virus A (H1N1), with IC50 values of 82-89 mu M.