、
methyl 2-diazo-2-(dimethoxyphosphoryl)acetate 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 72.0h,
以82%的产率得到(1S,6R,10R,11S)-1-[(1S,2R,3R,5R,7S)-2-(tert-butyldimethylsilyl)oxy-3-methyl-5-[(2S,5R,6R,8R,10R)-5-methyl-2-(2-propynyl)-5-(triethylsilyl)oxy-1,7,9-trioxadispiro[5.1.5.2]pentadecan-10-ylmethyl]-6,8-dioxabicyclo[3.2.1]octan-7-yl]-3-(tert-butyldiphenylsilyl)oxymethyl-10,11-dimethyl-8-oxaspiro[5.6]dodecan-2-en-7-one