(2R,3S,4S)-4-tert-butyldimethylsilyloxy-2,3-epoxycyclohexan-1-one

(2R,3S,4S)-4-tert-butyldimethylsilyloxy-2,3-epoxy-6-phenylselenylcyclohexan-1-one

(1R,5S,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-3-hydroxymethyl-3-phenylselanyl-7-oxa-bicyclo[4.1.0]heptan-2-one

(1S,5S,6R)-5-(2-tetrahydropyranyloxy)bicyclo<4.1.0>heptan-2-one

(1S,3S,5S,6R)-3-methyl-5-(2-tetrahydropyranyloxy)bicyclo<4.1.0>heptan-2-one