Acylated neo-clerodanes and 19-nor-neo-clerodanes from the aerial parts of Scutellaria coleifolia (Lamiaceae)

Two acylated neo-clerodanes with a 19,18-γ-lactone (1 and 2) and three 19-nor-neo-clerodanes (3-5), together with four neo-clerodanes (6-9), were isolated from the EtOAc-soluble fraction of the aerial parts of Scutellaria coleifolia. Their structures were established on the basis of spectroscopic analysis.63