(E)-(2R,3S,4S,6R,7R,10S)-2,7-Bis-(tert-butyl-dimethyl-silanyloxy)-3-methoxy-4,6,8,10-tetramethyl-5,11-dioxo-dodec-8-enoic acid tert-butyl ester 、
(6E,9Z)-(2S,3R,4S,5S,8S)-4-(tert-Butyl-dimethyl-silanyloxymethyl)-3-(4-methoxy-benzyloxy)-2,6,8-trimethyl-5-triethylsilanyloxy-undeca-6,9-dienal 在
(+)-β-chlorodiisopinocampheylborane 、
三乙胺 作用下,
以
乙醚 为溶剂,
反应 1.0h,
生成 tert-butyl (2R,3S,4S,6R,7R,8E,10S,13R,14R,15S,16S,17S,18E,20S,21Z)-2,7-bis[[tert-butyl(dimethyl)silyl]oxy]-16-[[tert-butyl(dimethyl)silyl]oxymethyl]-13-hydroxy-3-methoxy-15-[(4-methoxyphenyl)methoxy]-4,6,8,10,14,18,20-heptamethyl-5,11-dioxo-17-triethylsilyloxytricosa-8,18,21-trienoate 、 tert-butyl (2R,3S,4S,6R,7R,8E,10S,13S,14R,15S,16S,17S,18E,20S,21Z)-2,7-bis[[tert-butyl(dimethyl)silyl]oxy]-16-[[tert-butyl(dimethyl)silyl]oxymethyl]-13-hydroxy-3-methoxy-15-[(4-methoxyphenyl)methoxy]-4,6,8,10,14,18,20-heptamethyl-5,11-dioxo-17-triethylsilyloxytricosa-8,18,21-trienoate