(1R,4S)-1,4-Bis-(tert-butyl-dimethyl-silanyloxy)-2-[(R)-3-(tert-butyl-dimethyl-silanyloxy)-3-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-hexa-1,5-diynyl]-cyclopent-2-enecarbaldehyde 在
cerium(III) chloride 、
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
以78%的产率得到(2S,6R,10R,10aR)-2,6,10a-tris[[tert-butyl(dimethyl)silyl]oxy]-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-4,5,8,9-tetradehydro-1,2,7,10-tetrahydrocyclopenta[9]annulen-10-ol