1,3,5,6,7-Pentamethyl-4-[2-(1,3,5,6,7-pentamethyl-4-oxo-2-bicyclo[3.2.0]hepta-2,6-dienyl)ethyl]bicyclo[3.2.0]hepta-3,6-dien-2-one 、
甲基锂 以81%的产率得到4-[2-(4-hydroxy-1,3,4,5,6,7-hexamethyl-2-bicyclo[3.2.0]hepta-2,6-dienyl)ethyl]-1,2,3,5,6,7-hexamethylbicyclo[3.2.0]hepta-3,6-dien-2-ol