A Scalable Synthesis of the IP<sub>7</sub> Isomer, 5-PP-Ins(1,2,3,4,6)P<sub>5</sub>
                                
                                    
                                        作者:Honglu Zhang、James Thompson、Glenn D. Prestwich                                    
                                    
                                        DOI:10.1021/ol900149x
                                    
                                    
                                        日期:2009.4.2
                                    
                                    The phosphorylated inositol diphosphates, including the diphosphoinositol pentakisphosphate regioisomers, play critical roles in signal transduction and cellular regulation. In particular, the IP7 isomer 5-PP-Ins(1,2,3,4,6)P-5 is implicated in a nonenzymatic phosphate transfer converting a protein serine phosphate residue to a serine diphosphate. A scalable, practical new synthesis of 5-PP-Ins(1,2,3,4,6)P-5 is described that also allows access to a variety Of IP7 and IP8 regioisomers. The identity of the synthetic 5-PP-Ins(1,2,3,4,6)P-5 was validated using IP6K1 to catalyze the conversion of IP7 + ADP to ATP + IP6.