(R)-3-(t-Butyl)dimethylsilyloxy-19,20-dinor-vitamin-A-saeureaethylester

(-)-<(R)-4-t-Butyldimethylsilyloxy-2,6,6-trimethyl-1-cyclohexen-1-yl>propenal

(Z)-2-[(E)-2-((1S,4S,6R)-4-Hydroxy-2,2,6-trimethyl-7-oxa-bicyclo[4.1.0]hept-1-yl)-vinyl]-4-oxo-but-2-enoic acid methyl ester

(2Z,4E)-5-(4-Hydroxy-2,6,6-trimethylcyclohex-1-enyl)-3-methoxycarbonylpenta-2,4-dienal

(E)-<3-(4-tert-Butyldimethylsilyloxy-2,6,6-trimethylcyclohex-1-enyl)allyl>sulfonylbenzene