[(4E,6E,8E,12E)-pentadeca-4,6,8,12,14-pentaenyl]sulfonylbenzene 、
(4S,5R)-5-[(3aR,4R,6R,7aR)-6-[(1S,2R,6R)-6-[(3aR,4R,6R,7aR)-4-[(4S,5R)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl]-2,6-bis[[tert-butyl(dimethyl)silyl]oxy]-3-methylidene-1-(2-trimethylsilylethoxymethoxy)hexyl]-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]-2,2-dimethyl-1,3-dioxolane-4-carbaldehyde 在
lithium diisopropyl amide 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
以79%的产率得到(5E,7E,9E,13E)-1-[(4R,5R)-5-[(3aR,4R,6R,7aR)-6-[(1S,2R,6R)-6-[(3aR,4R,6R,7aR)-4-[(4S,5R)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl]-2,6-bis[[tert-butyl(dimethyl)silyl]oxy]-3-methylidene-1-(2-trimethylsilylethoxymethoxy)hexyl]-2,2-dimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]-2,2-dimethyl-1,3-dioxolan-4-yl]-2-(benzenesulfonyl)hexadeca-5,7,9,13,15-pentaen-1-ol