ethyl 4-(2-ethoxycarbonyl-1-{6-[3-(pyridin-2-ylamino) propoxy]-1H-indol-3-yl}ethyl)benzoate 以
1,4-二氧六环 为溶剂,
以giving 4-(2-carboxy-1-{6-[3-(pyridin-2-ylamino)propoxy]-1H-indol-3-yl}ethyl)benzoic acid的产率得到4-(2-carboxy-1-{6-[3-(pyridin-2-ylamino)propoxy]-1H-indol-3-yl}ethyl)benzoic acid