methyl 18-benzoyloxy-12-oxo-12,13,-secodecipian-13-oate 在
phenyltrimethylammonium tribromide 作用下,
以
四氢呋喃 为溶剂,
反应 0.5h,
以140 mg的产率得到Benzoic acid (1R,6S,7R,8R)-3-bromo-8-(2-methoxycarbonyl-1-methyl-ethyl)-3-methyl-7-(4-methyl-pentyl)-2-oxo-bicyclo[4.2.0]oct-7-ylmethyl ester