、
methyl 2-((2S,4S,5R,6R)-4-(tert-butyl-dimethyl-silanyloxy)-6-((4E,2R,3R,7R)-7-(tert-butyl-dimethyl-silanyloxy)-3-methoxy-5-methyl-8-oxo-oct-4-en-2-yl)-tetrahydro-2-methoxy-5-methyl-2H-pyran-2-yl)acetate 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 7.83h,
以0.38 g的产率得到methyl 2-((2S,4S,5R,6R)-6-((2R,3R,4E,7R,8E,10E)-7-(tert-butyl-dimethyl-silanyloxy)-13-((1S,2S)-2-chlorocyclopropyl)-3-methoxy-5-methyltrideca-4,8,10-trien-12-yn-2-yl)-4-(tert-butyl-dimethyl-silanyloxy)-tetrahydro-2-methoxy-5-methyl-2H-pyran-2-yl)acetate