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Journal article

epi-Aszonalenins A, B, and C from Aspergillus novofumigatus

By Rank, Christian1,2; Phipps, Richard Kerry1,2; Harris, Pernille3,4; Frisvad, Jens Christian1,2; Gotfredsen, Charlotte Held4,5; Larsen, Thomas Ostenfeld1,2

From

Center for Microbial Biotechnology, Department of Systems Biology, Technical University of Denmark1

Department of Systems Biology, Technical University of Denmark2

X-ray Crystallography, Department of Chemistry, Technical University of Denmark3

Department of Chemistry, Technical University of Denmark4

Organic Chemistry, Department of Chemistry, Technical University of Denmark5

Three new benzodiazepines have been isolated from an unusual chemotype of Aspergillus novofumigatus: epi-aszonalenins A, B, and C. The structures were elucidated by use of one- and two-dimensional NMR spectroscopic techniques and HR ESI MS. The relative configuration was established on the basis of a single crystal X-ray diffraction study of epi-aszonalenin A and the absolute configuration was determined by optical rotation comparison with the literature data.

The absolute configurations of epi-aszonalenins B and C were determined by circular dichroism comparison to epi-aszonalenin A.

Language: English
Year: 2006
Pages: 6099-6102
ISSN: 18733581 and 00404039
Types: Journal article
DOI: 10.1016/j.tetlet.2006.06.086
ORCIDs: Harris, Pernille , Frisvad, Jens Christian , Gotfredsen, Charlotte Held and Larsen, Thomas Ostenfeld

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