Stereumin A-E, sesquiterpenoids from the fungus Stereum sp. CCTCC AF 207024.
Five cadinane sesquiterpenoids, named stereumin A (1), B (2), C (3), D (4) and E (5) were isolated from the CHCl(3) extract of the culture broth of the fungal strain CCTCC AF 207024. Based on the sequences at the internal transcribed spacer (ITS) region and partial 28S rDNA, this fungus was identified as a Stereum sp. The structures of the five compounds were elucidated using spectroscopic data from 1D, 2D NMR and HRESIMS experiments, and the structures of 1 and 2 were further confirmed by single-crystal X-ray diffraction analysis. Compounds 1-5 showed nematicidal activities against the nematode Panagrellus redivivus at 400 mg l(-1). Among these five compounds, compounds 3 and 4 killed 84.4% and 94.9% of P. redivivus, respectively in 48 h.
Li
Guo-Hong
GH
Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, 650091 Yunnan, China.
Duan
Meng
M
Yu
Ze-Fen
ZF
Li
Lei
L
Dong
Jin-Yan
JY
Wang
Xing-Biao
XB
Guo
Jian-Wei
JW
Huang
Rong
R
Wang
Min
M
Zhang
Ke-Qin
KQ
D000818:Animals; D000871:Anthelmintics / Q000737:chemistry / Q000494:pharmacology; D001487:Basidiomycota / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009348:Nematoda / Q000187:drug effects; D012717:Sesquiterpenes / Q000737:chemistry* / Q000494:pharmacology
D000871:Anthelmintics; D012717:Sesquiterpenes