Tropane alkaloids from a Brazilian bark traded as 'Catuaba'

摘要

Dichloromethane extracts of a Brazilian bark assigned as Anemopaegma mirandum contained four tropane alkaloids. MS-, UV-, IR-, ~1H NMR-data and specific optical rotation allowed the identification of catuabin C and its 7-exohydroxy-20-methyl-derivative. As no alkaloids are described for Anemopaegma these results indicate heterogeneity for the investigated drug and require a further review.