Acetic acid (2R,3R,4R,5R)-2-(6-benzoylamino-purin-9-yl)-4-benzyloxy-5-(2-isopropoxysulfonyl-ethyl)-tetrahydro-furan-3-yl ester                                                                                                                                                              在
                                                                                                                                                                                 
四丁基碘化铵                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                                                        以75%的产率得到Sodium; 2-[(2R,3R,4R,5R)-4-acetoxy-5-(6-benzoylamino-purin-9-yl)-3-benzyloxy-tetrahydro-furan-2-yl]-ethanesulfonate