ethyl (1S,6R,7S)-7-cyano-8-methylene-10-oxobicyclo[4.3.1]deca-2,4-diene-1-carboxylate

ethyl (1S,6R,9S)-9-cyano-8-methylene-10-oxobicyclo[4.3.1]deca-2,4-diene-2-carboxylate

ethyl (1R,6R,7S)-7-cyano-8-methylene-10-oxobicyclo[4.3.1]deca-2,4-diene-3-carboxylate

(2S,3R)-2-(2,4-dimethoxyphenyl)-4-methylene-1-tosylpyrrolidine-3-carbonitrile

(E)-2-(5-(pyridin-3-yl)-1-tosylpyrrolidin-3-ylidene)acetonitrile