[EN] PROCESS FOR PREPARING ENTECAVIR AND ITS INTERMEDIATES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE L'ENTÉCAVIR ET DE SES INTERMÉDIAIRES
                        
                            
                                申请人:SCINOPHARM TAIWAN LTD
                            
                            
                                公开号:WO2011102806A1
                            
                            
                                公开(公告)日:2011-08-25
                            
                            A process of making entecavir comprising converting a compound of formula (M5) to entecavir, wherein the two PGs on the formula (M5) are taken together to form an optionally substituted six- or seven-member cyclic ring.
                            制备
恩替卡韦的过程包括将式(M5)的化合物转化为
恩替卡韦,其中式(M5)上的两个
PG基团结合在一起形成一个可选择取代的六元或七元环。