Abstract 2D NMR techniques (J‐resolved 13C, 13C13C correlated, 1H13C correlated) were used to gather more chemical shift and coupling information on the pentacyclic triterpene, lupane. They confirm and complete 13C assignments made earlier, and corroborate the constitution and major configurational details of lupane. Lupane is a parent compound and spectral reference in the study of sedimental demethylated triterpenes.
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Ammann et al. (1982) studied this question.
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