(E) 5-methyl-1H-pyrrole-2-carboxylic acid-3'-ester of 7-[(6-deoxy-5-C-methyl-4-O-methyl-alpha-L-lyxo-hexopyranosyl)oxy]-3-[2-ethoxy-1-(methoxyimino)ethyl]-8-methyl-4-(2-propenyloxy)-2H-1-benzopyran-2-one 在
四(三苯基膦)钯 二异丙胺 作用下,
以
四氢呋喃 为溶剂,
反应 0.33h,
生成
(E) 5-methyl-1H-pyrrole-2-carboxylic acid-3'-ester of 7-[(6-deoxy-5-C-methyl-4-O-methyl-alpha-L-lyxo-hexopyranosyl)oxy]-3-(2-ethoxy-1-(methoxyimino)ethyl)-4-hydroxy-8-methyl-2H-1-benzopyran-2-one