K. Matsuo et al., SYNTHESIS OF A KEY INTERMEDIATE FOR THE SYNTHESIS OF (-GRANDISOL UTILIZING (-)-QUINIC ACID()), Chemical and Pharmaceutical Bulletin, 45(11), 1997, pp. 1734-1738
A key intermediate for the synthesis of (+)-grandisol, 4aR,6aR)-4a-met
hyl-2-oxabicyclo[4.2.0]octan-1-one, was synthesized starting from(-)-q
uinic acid as the chiral source.