作者:Maurizio Bruno、Franco Piozzi、Benjamín Rodríguez、Giuseppe Savona、María C. de la Torre、Orietta Servettaz
DOI:10.1016/0031-9422(92)80480-3
日期:1992.12
Abstract Nineteen already known neo-clerodane diterpenoids have been isolated from the aerial parts of Teucrium montbretii subsp. montbretii, T. belion and T. massiliense. In addition, the latter species provided a new substance, teumassin, whose structure of 19-acetoxy-4α, 18;15, 16-diepoxy-2β-hydroxy-6-oxo-neo-cleroda-13(16), 14-dien-20, 12S-olide was established by spectroscopic means and by its