4-(5'-Methoxycarbonylpentyl)-5-acetylthiomethylimidazolidin-2-one 在
lithium hydroxide 作用下,
以
甲醇 为溶剂,
反应 0.5h,
以36%的产率得到6-{(4R,5R)-5-[(4R,5R)-5-(5-Methoxycarbonyl-pentyl)-2-oxo-imidazolidin-4-ylmethyldisulfanylmethyl]-2-oxo-imidazolidin-4-yl}-hexanoic acid methyl ester