期刊
NATURE COMMUNICATIONS
卷 3, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms2031
关键词
-
资金
- Natural Science Foundation of China [81121062, 21132004, 21072092]
- Jiangsu Province [BK2009010]
Understanding how simple molecules are pieced together in organisms may aid biotechnological manipulation and synthetic approaches to complex natural products. The mantis-associated fungus Daldinia eschscholzii IFB-TL01 produces the unusually structured immunosuppressants (+/-)-dalesconols A and B, along with their congener (+/-)-dalesconol C, with the (-)-enantiomers in excess. Here we report that these structural and stereochemical peculiarities of dalesconols A-C are a result of promiscuous and atropselective couplings of radicals derived from 1,3,6,8-tetrahydroxynaphthalene, 1,3,8-trihydroxynaphthalene and 1,8-dihydroxynaphthalene. The observed (-)-enantiomeric excess is found to depend on the dominance of particular conformers of naphthol dimer intermediates, which are ligands of laccase.
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