More specifically, the present invention relates to a process for the preparation of substantially optically pure cishexahydrodibenzofuran compounds including {HEAD ~ at least two chiral fused ring centers} which comprises {TAIL ~ the acidic catalyzed stereospecific ring closure} by the intra molecular inversion of a gamma, i.e. 2, carbon atom of a 2 phenol 
comprises
More specifically , the present invention relates to a process for the preparation of substantially optically pure cishexahydrodibenzofuran compounds including { HEAD ~ at least two chiral fused ring centers } which comprises { TAIL ~ the acidic catalyzed stereospecific ring closure } by the intra molecular inversion of a gamma , i.e. 2 , carbon atom of a 2 phenol
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH