Total Synthesis of the Diterpenoid (k)-Ambliol B ... Edward Piers* and Pierre C. Marais Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada V6T 1 Y6 ... The diterpenoid (+)-ambliol B (4) has been derived synthetically from 3,4-dimethylcyclohex-2-en-I -one via a 13-step sequence of reactions. ... It is highly likely that the clerodane diterpenoids [general carbon skeleton (3)] are biogenetically derived from ...