期刊
ORGANIC LETTERS
卷 22, 期 1, 页码 78-82出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.9b03964
关键词
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资金
- Minister dell' Istruzione, dell'Universita e della Ricerca (PRIN), Project [2015MSCKCE_003]
- Regione Campania, PO FESR 2014-2020, O.S. 1.2 [B61G18000470007]
- European Regional Development Fund -Project ENOCH [CZ.02.1.01/0.0/0.0/16_019/0000868]
- Kiel University
Zosteraphenols, two new tetracyclic diarylheptanoids were isolated from the seagrass Zostera marina. The rotameric equilibrium of the strained tetracyclic structures, involving a diastereomeric minor rotamer with opposite axial chirality, resulted in coalescent NMR spectra. Although the elusive minor rotamer was only characterized with H-1 chemical shifts, the excellent agreement between experimental and DFT-calculated chemical shifts of both rotamers unequivocally supported this analysis. Absolute configuration of zosteraphenols was determined by DFT prediction of their ECD spectra.
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