N-[(15R,16S)-16-hydroxy-15-tetracyclo[6.6.2.02,7.09,14]hexadeca-2,4,6,9,11,13-hexaenyl]-2,4,6-tri(propan-2-yl)benzenesulfonamide 、
meso-endo-tetrahydro-4,7-ethanoisobenzofuran-1,3-dione 在
六甲基磷酰三胺 、
正丁基锂 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
生成
(1R,2S,3R,4S)-3-((((11S,12R)-12-((2,4,6-triisopropylphenyl)sulfonamido)-9,10-dihydro-9,10-ethanoanthracen-11-yl)oxy)carbonyl)bicyclo[2.2.2]oct-5-ene-2-carboxylic acid