(3aR,4S,5S,7S,7aS)-6-(2,7-dibromo-9-phenylxanthen-9-yl)oxyspiro[3a,4,5,6,7,7a-hexahydro-1,3-benzodioxole-2,1'-cyclopentane]-4,5,7-triol 、
bis(cyanoethyl)diethylphophoramidite 生成 [(3aR,4R,5R,6R,7R,7aR)-4,7-bis[bis(2-cyanoethoxy)phosphoryloxy]-6-(2,7-dibromo-9-phenylxanthen-9-yl)oxyspiro[3a,4,5,6,7,7a-hexahydro-1,3-benzodioxole-2,1'-cyclopentane]-5-yl] bis(2-cyanoethyl) phosphate