Triterpenoids fromAbies species 19. (22Z)-3?-Hydroxy-17,14-fridolanosta-7,14,22,24-tetraen-26,23-olide, a new lactone from the needles of the Siberian fir
摘要:
A new triterpenoid lactone with a reported rearranged lanostane skeleton was isolated from the neutral fraction of the extract from the needles of Siberian fir. Its structure was established on the basis of chemical transformations and NMR spectra using two-dimensional (COSY, COLOC) NMR spectroscopy.