trimethyl orthohexadecanoate 、
[(2R,3R,4R,5R)-5-(6-benzamidopurin-9-yl)-4-[[(2R,3S,4R,5R)-5-(6-benzamidopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-(2-chlorophenoxy)phosphoryl]oxy-3-[[hydroxy-di(propan-2-yl)silyl]oxy-di(propan-2-yl)silyl]oxyoxolan-2-yl]methyl [(2R,3R,4R,5R)-2-(6-benzamidopurin-9-yl)-4-[[hydroxy-di(propan-2-yl)silyl]oxy-di(propan-2-yl)silyl]oxy-5-(hydroxymethyl)oxolan-3-yl] (2-chlorophenyl) phosphate 在
甲烷磺酸 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
以40%的产率得到[(2R,3R,4R,5R)-4-[[(3aR,4R,6R,6aR)-4-(6-benzamidopurin-9-yl)-2-methoxy-2-pentadecyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy-(2-chlorophenoxy)phosphoryl]oxy-5-(6-benzamidopurin-9-yl)-3-[[hydroxy-di(propan-2-yl)silyl]oxy-di(propan-2-yl)silyl]oxyoxolan-2-yl]methyl [(2R,3R,4R,5R)-2-(6-benzamidopurin-9-yl)-4-[[hydroxy-di(propan-2-yl)silyl]oxy-di(propan-2-yl)silyl]oxy-5-(hydroxymethyl)oxolan-3-yl] (2-chlorophenyl) phosphate