(1R,5S,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-2-trimethylsilanyloxy-7-oxa-bicyclo[4.1.0]hept-2-ene

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

(1R,2S)-5,5-(Ethylendioxy)-2-hydroxycyclohexancarbonsaeure-ethylester

(1S)-4,4-ethylenedioxy-2-cyclohexen-1-ol

Acetic acid (S)-(1,4-dioxa-spiro[4.5]dec-6-en-8-yl) ester