Methyl 2-[benzyl-(2-isocyanoacetyl)amino]acetate 、
2-((3aR,4R,6S,6aS)-4-(aminomethyl)-tetrahydro-2,2-dimethylfuro[3,4-d][1,3]dioxol-6-yl)-N-(((3aS,4S,6R,6aR)-tetrahydro-4-(2-hydroxyethyl)-2,2-dimethylfuro[3,4][1,3]dioxol-6-yl)methyl)acetamide 、
庚醛 以
甲醇 为溶剂,
以47%的产率得到methyl 2-[[2-[1-[[(3aR,4R,6S,6aS)-6-[2-[[(3aR,4R,6S,6aS)-6-(2-hydroxyethyl)-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl]methylamino]-2-oxoethyl]-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl]methylamino]heptyl]-1,3-oxazol-5-yl]-benzylamino]acetate