Methyl 3-[5-(4-chlorobenzyl)-2-methyl-8-(5-phenylpyridin-2-ylmethoxy)-3,5-dihydro-3-oxo-2H-thiopyrano[4,3,2-cd]indol-4-yl]-2,2-dimethyl propanoate 在
aq NaOH 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
生成 3-[5-(4-Chlorobenzyl)-2-methyl-8-(5-phenylpyridin-2-ylmethoxy)-3,5-dihydro-3-oxo-2H-thiopyrano[4,3,2-cd]indol-4-yl]-2,2-dimethylpropanoic acid