期刊
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
卷 64, 期 3, 页码 620-622出版社
TAYLOR & FRANCIS LTD
DOI: 10.1271/bbb.64.620
关键词
demethylsorbicillin; oxosorbicillinol; Trichoderma sp USF-2690; DPPH radical scavenger
The novel compounds, demethylsorbicillin (1) and oxosorbicillinol (2), were isolated from a fermentation broth of Trichoderma sp, USF-2690. The structures of these compounds, which were determined from spectroscopic evidence, suggest the possibility: that methylation at C-6 and oxidation at C-1 and C-6 of sorbicillin were controlled in the early polyketide stage before the formation of oxidized sorbicillin dimers. In a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging assay, 2 gave an ED50 value of 87.7 mu M.
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