(S)-4-formyl-4-methyl-5-hexynonitrile

methyl (R)-4-(2-cyanoethyl)-4-methylhex-2-(E)-en-5-ynoate

(S)-4-{5-[(R)-3-Cyano-1-((R)-2-methoxycarbonyl-1-nitromethyl-ethyl)-1-methyl-propyl]-isoxazol-3-yl}-5,5-dimethyl-hept-6-ynoic acid methyl ester

(R)-4-<(R)-3-cyano-1-ethynyl-1-methylpropyl>-2-pyrrolidinone

methyl (3R,4R)-4-(2-cyanoethyl)-4-methyl-3-(nitromethyl)-5-hexynoate