Abstract
Despite the large number of clerodanes isolated as natural products in the last decade, the correct 13C 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 13C NMR spectral analysis of methyl (+)-hard-wickiate and 14 hemisynthetic derivatives is reported. © 1998 John Wiley & Sons, Ltd.
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