(2S)-1-(2,3-dihydro-2,2-dimethylbenzofuran-7-yl)oxy-3-[(2S,4R)-4-(4-methoxybenzo[b]thiophen-2-yl)-2-methylpiperidinyl]-2-propanol 、
草酸 以
乙酸乙酯 为溶剂,
生成
(2S)-1-(2,3-dihydro-2,2-dimethylbenzofuran-7-yl)oxy-3-[(2S,4R)-4-(4-methoxybenzo[b]thiophen-2-yl)-2-methylpiperidinyl]-2-propanol oxalate