N-benzyl-N-[(1S,5S)-7-cyclohexyl-4-hydroxy-5-(hydroxymethyl)bicyclo[3.2.0]hept-6-en-6-yl]-4-methylbenzenesulfonamide 、
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53%的产率得到N-benzyl-N-[(1S,4S,5S)-7-cyclohexyl-4-[(2,4,8,10-tetra-tert-butyldibenzo[d,f][1,3,2]-dioxaphosphepin-6-yl)oxy]-5-{[(2,4,8,10-tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]-methyl}bicyclo[3.2.0]hept-6-en-6-yl]-4-methylbenzenesulfonamide