(Z)-7-[(1S,2R,3R,4R)-3-(8-Hydroxy-dibenzofuran-2-sulfonylamino)-bicyclo[2.2.1]hept-2-yl]-hept-5-enoic acid 、
碘甲烷 在
potassium carbonate 作用下,
生成 (Z)-7-[(1S,2R,3R,4R)-3-(8-Methoxy-dibenzofuran-2-sulfonylamino)-bicyclo[2.2.1]hept-2-yl]-hept-5-enoic acid methyl ester