6-chloro-9-(2,3,5-tris-O-(tert-butyldimethylsilyl)-β-D-ribofuranosyl)-9H-purine 、
(2S,3R)-3-amino-1,4-bis(phenylmethoxy)butan-2-ol 在
tris(dibenzylideneacetone)dipalladium (0)
potassium tert-butylate 、
R-(+)-1,1'-联萘-2,2'-双二苯膦 作用下,
以
四氢呋喃 为溶剂,
反应 16.0h,
以39%的产率得到(2S,3R)-1,4-Bis-benzyloxy-3-{9-[(2R,3R,4R,5R)-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-9H-purin-6-ylamino}-butan-2-ol