1. Instituto de Química Orgánica, CIC, Juan de la Cierva 3, Madrid-6, Spain
Abstract:
From the aerial part of Marrubium friwaldskyanum the previously known diterpenoid peregrinine and its new prefuranic derivative, preperegrinine, have been isolated. The known compound 5,6-dihydroxy-7,4′-dimethoxyflavone has also been found in the same source.