Two optically pure derivatives of alpha-cedrene - (1R,2R,5S,7R,8R)8-hydroxy
-9-cedranone 2 and (1R,2R,5S,7R,8R,9S)-9-amino-8-hydroxycedrane 4 were prep
ared conveniently. An X-ray structural analysis of 2 was performed indicati
ng that the hydroxycedranone exists as dimer due to one hydrogen bond in so
lid state.