N'-[1-(2-hydroxymethyl-[1,3]dioxolan-4-yl)-2-oxo-1,2-dihydro-pyrimidin-4-yl]-N,N-dimethyl-formamidine 、
6-(benzyl-tert-butoxycarbonyl-amino)-2,2-dimethyl-hexanoic acid 在
4-二甲氨基吡啶 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
以28%的产率得到6-(Benzyl-tert-butoxycarbonyl-amino)-2,2-dimethyl-hexanoic acid 4-[4-(dimethylamino-methyleneamino)-2-oxo-2H-pyrimidin-1-yl]-[1,3]dioxolan-2-ylmethyl Ester