methyl 2-[(3aS,4S,6R,6aS)-4-[[2-[(3aS,4S,6R,6aS)-4-amino-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetyl]amino]-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetate 、
2-[(3aS,4S,6R,6aS)-4-[[2-[(3aS,4S,6R,6aS)-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-4-(phenylmethoxycarbonylamino)-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetyl]amino]-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetic acid 在
N,N-二异丙基乙胺 、
Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以150 mg的产率得到methyl 2-[(3aS,4S,6R,6aS)-4-[[2-[(3aS,4S,6R,6aS)-4-[[2-[(3aS,4S,6R,6aS)-4-[[2-[(3aS,4S,6R,6aS)-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-4-(phenylmethoxycarbonylamino)-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetyl]amino]-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetyl]amino]-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetyl]amino]-6-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-yl]acetate