邻苯二甲酸二甲酯

(1R,2R,4S)-1-Acetyl-8-oxa-tricyclo[3.2.1.02,4]oct-6-ene-3-carbonitrile

(1aS,2R,2aS,6R,6aS,7aR)-2,6-diacetyl-1a,2,2a,3,6,6a,7,7a-octahydro-1H-2,7:3,6-diepoxycyclopropa[b]naphthalene-1-carbonitrile

(1R,2R,4S)-methyl 3-cyano-8-oxatricyclo[3.2.1.02,4]oct-6-ene-1-carboxylate