3,5-dideoxy-3,5-diamino-1,2-O-isopropylidene-ribofuranose 、
3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl phosphorochloridite 在
吡啶 作用下,
以
甲苯 为溶剂,
以52%的产率得到N-[[(3aR,5R,6R,6aR)-2,2-dimethyl-6-[(2,4,8,10-tetratert-butylbenzo[d][1,3,2]benzodioxaphosphepin-6-yl)amino]-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]methyl]-2,4,8,10-tetratert-butylbenzo[d][1,3,2]benzodioxaphosphepin-6-amine