Scheme 4.

Completion of the synthesis of gaur acid (7). DCE=1,2-dichloroethane, DMF=N,N-dimethylformamide, NHC=N-heterocyclic carbene, PDC=pyridinium dichromate.

Completion of the synthesis of gaur acid (7). DCE=1,2-dichloroethane, DMF=N,N-dimethylformamide, NHC=N-heterocyclic carbene, PDC=pyridinium dichromate.