New C18-diterpenoid alkaloids from Delphinium anthriscifolium var. savatieri

Abstract

Five new C18-diterpenoid alkaloids, anthriscifolcines A (1), B (2), C (3), D (4), and E (5), together with a known C19-diterpenoid alkaloid delcorine (6), were isolated from the whole herb of Delphinium anthriscifolium var. savatieri. The structures of these new alkaloids were established on the basis of spectral data (1D- and 2DNMR, HR-ESI-MS). © 2007 Pharmaceutical Society of Japan.