10-methoxymethyl-2-(2,2-dimethyl-1,3-dioxolan-4-yl)-oxazolo[4,5-g]-β-carboline-9-carboxylic acid isopropyl ester 、
三氟乙酸 、
碳酸氢钠 在
二氯甲烷 作用下,
以
二氯甲烷 为溶剂,
反应 4.0h,
以After the drying in a vacuum at 50° C., 112 mg of 2-(1,2-dihydroxyethyl)-10-methoxymethyl-oxazolo-[4,5-g]-β-carboline-9-carboxylic acid isopropyl ester with a melting point of 168° C. (decomposition) is obtained的产率得到2-(1,2-dihydroxyethyl)-10-methoxymethyl-oxazolo-[4,5-g]-β-carboline-9-carboxylic acid isopropyl ester