8,8'-Diapo-20-acetoxycaroten-8,8'-dial 、
((2E,4E)-(R)-6-Isopropyl-3,9-dimethyl-deca-2,4-dienyl)-triphenyl-phosphonium; bromide 在
1,2-环氧丁烷 作用下,
生成 (2
R,3
E,2'
R,3'
E)-20-acetoxy-2,2'-bis-(3-methyl-butyl)-3,4,3',4'-tetradehydro-1,2,1',2'-tetrahydro-ψ,ψ-carotene