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Assignment of 13 C NMR data of methyl (+)‐hardwickiate and its derivatives
Author(s) -
Costa Marta,
Fujiwara Fred Y.,
Imamura Paulo M.
Publication year - 1998
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199807)36:7<542::aid-omr334>3.0.co;2-7
Subject(s) - chemistry , chemical shift , carbon 13 nmr , computational chemistry , organic chemistry , spectral analysis , stereochemistry , spectroscopy , physics , quantum mechanics
Despite the large number of clerodanes isolated as natural products in the last decade, the correct 13 C NMR chemical shift assignments of some carbons are still in doubt. In order to provide unambiguous assign‐ments of the chemical shifts of clerodane diterpenes, a complete 13 C NMR spectral analysis of methyl (+)‐hard‐wickiate and 14 hemisynthetic derivatives is reported. © 1998 John Wiley & Sons, Ltd.