2',3'-O-cyclopentandienide-4'-azidoinosine 、
phenyl(benzyloxy-L-alaninyl)phosphorochloridate 在
magnesium,2-methylpropane,bromide 作用下,
以
四氢呋喃 为溶剂,
反应 17.0h,
以57%的产率得到benzyl ((((3a'S,4'R,6'R,6a'R)-4'-azido-6'-(6-oxo-1,6-dihydro-9H-purin-9-yl)tetrahydrospiro[cyclopentane-1,2'-furo[3,4-d][1,3]dioxol]-4'-yl)methoxy)(phenoxy)phosphoryl)-L-alaninate