(1R,4S)-[1-(1,7,7-Trimethylbicyclo[2.2.1]hept-2-ylidenamino)-3-butinyl]phosphonsaeure-diethylester

(1R,4S)-[2-Phenyl-1-(1,7,7-trimethylbicyclo[2.2.1]hept-2-ylidenamino)ethyl]phosphonsaeure-diethylester

(S)-4-nitro-3-phenyl-1-((1R,2R,4R)-1,7,7-trimethyl-2-((trimethylsilyl)oxy)bicyclo[2.2.1]heptan-2-yl)butan-1-one

(S)-3-(4-chlorophenyl)-4-nitro-1-((1R,2R,4R)-1,7,7-trimethyl-2-((trimethylsilyl)oxy)bicyclo[2.2.1]heptan-2-yl)butan-1-one

(1R,3'S,4R)-1,7,7-trimethylspiro[bicyclo[2.2.1]heptane-2,2'-[1,3]oxathiolan]-5'-one 3'-oxide