(3S,6R,7S,8S,12E/Z,15S,16E)-6-ethyl-5-oxo-8,12,16-trimethyl-4,4-trimethylene-17-(2-pyridyl)-3,7,15-tris[[dimethyl(1,1-dimethylethyl)silyl]oxy]-heptadeca-12,16-dienal 在
chromosulfuric acid 作用下,
以
丙酮 为溶剂,
反应 1.5h,
以30%的产率得到(3S,6R,7S,8S,12E,15S,16E)-6-ethyl-5-oxo-8,12,16-trimethyl-4,4-trimethylene-17-(2-pyridyl)-3,7,15-tris-[[dimethyl(1,1-dimethylethyl)silyl]oxy]-heptadeca-12,16-dienoic acid