(1S,13R,14S,17S,21S,33R,34S,37S)-9,29-dihydroxy-13,33-bis[(2S)-2-(methoxymethoxy)-3-[(2S,6R)-6-[2-methyl-1-tri(propan-2-yl)silyloxypropan-2-yl]oxan-2-yl]propyl]-14,34-dimethyl-12,32,41,42-tetraoxapentacyclo[35.3.1.117,21.05,10.025,30]dotetraconta-5(10),6,8,25(30),26,28-hexaene-11,31-dione 在
四丁基氟化铵 作用下,
以
四氢呋喃 为溶剂,
以46%的产率得到