The absolute stereochemistry of some clerodane diterpenoids isolated from Teucrium species
作者:Ana Lourenço、María C. de la Torre、Benjamín Rodríguez、Maurizio Bruno、Franco Piozzi、Giuseppe Savona
DOI:10.1016/0031-9422(91)83737-6
日期:1991.1
Abstract The absolute configurations of four previously isolated clerodanediterpenoids, montanin C, 12-epiteupolin II, teugnaphalodin and teubutilin B, have been established by chemical correlation with some derivatives of 19-acetylgnaphalin, a neo -clerodane whose absolutestereochemistry is known. The above four compounds also belong to the neo -clerodane series.
Teugnaphalodin, a neo-clerodane diterpenoid from Teucrium gnaphalodes
作者:María C. de la Torre、Benjamín Rodríguez、Giuseppe Savona、Franco Piozzi
DOI:10.1016/s0031-9422(00)94523-0
日期:1985.12
Abstract A new neo-clerodanediterpenoid, teugnaphalodin, has been isolated from the aerial part of Teucrium gnaphalodes . Its structure, 6β,18; 15,16-diepoxy-4α,6α,12 S -trihydroxy-neo-clerodane-13(16),14-dien-20,19-olide, has been established by chemical and spectroscopic means.