(3aS,4S,6R,6aR)-tert-butyl 4-(2-amino-6-oxo-1,6-dihydropyrimidin-5-yl)-6-(hydroxymethyl)-2,2-dimethyldihydro-3aH-[1,3]dioxolo[4,5-c]pyrrole-5(4H)-carboxylate 、
盐酸 、 在
water ethanol 作用下,
以to furnish 2-amino-5-((2S,3 S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)pyrrolidin-2-yl)pyrimidin-4(3H)-one (13i) (0.05 g, 0.159 mmol, 50.6% yield) as a white solid的产率得到2-amino-5-((2S,3S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)pyrrolidin-2-yl)pyrimidin-4(3H)-one dihydrochloride