(4aR,8R,8aR)-2,2-Di-tert-butyl-6-[(E)-(R)-1-(tert-butyl-dimethyl-silanyloxymethyl)-5-methoxy-pent-3-enyloxy]-8-triisopropylsilanyloxy-hexahydro-1,3,5-trioxa-2-sila-naphthalene-6-carbonitrile 在
LiDBB 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
以88%的产率得到[(3'R,4aR,5'R,6S,8R,8aR)-2,2-ditert-butyl-5'-[[tert-butyl(dimethyl)silyl]oxymethyl]-3'-ethenylspiro[4a,7,8,8a-tetrahydro-4H-pyrano[3,2-d][1,3,2]dioxasiline-6,2'-oxolane]-8-yl]oxy-tri(propan-2-yl)silane