Vv. Grishko et al., TRITERPENOIDS FROM ABIES SP .16. PREPARATION AND CRYSTAL-STRUCTURE OFA NEW TRINORLANOSTANOID, Russian chemical bulletin, 45(3), 1996, pp. 709-712
The structure of the molecule of a new trinorlanostane hydroxyketone o
btained by alkali treatment of total triterpenoid acids from the ether
extract of Siberian fir needles was established using NMR spectra and
X-ray analysis.