Synthesis, Calcium Mobilizing, and Physicochemical Properties of <scp>d</scp>-<i>c</i><i>hiro-</i>Inositol 1,3,4,6-Tetrakisphosphate, a Novel and Potent Ligand at the <scp>d</scp>-<i>m</i><i>yo</i>-Inositol 1,4,5-Trisphosphate Receptor
作者:Changsheng Liu、Richard J. Davis、Stefan R. Nahorski、Stephanie Ballereau、Bernard Spiess、Barry V. L. Potter
DOI:10.1021/jm980733i
日期:1999.6.1
The synthesis of a novel and potent ligand at the D-myo-inositol 1,4,5-trisphosphate receptor (InsP(3)R) is described. D-chiro-Inositol 1,3,4,6-tetrakisphosphate (7) and L-chiro-inositol 1,3,4,6-tetrakisphosphate (ent-7) have been synthesized from D-2,5-di-O-benzyl-chiro-inositol and L-2,5-di-O-benzyl-chiro-inositol, respectively. The potency of binding and Ca2+ release of 7 and ent-7 were examined in L15 and Lvec cells. 7 was a full agonist at the InsP(3)R in both cells, and ent-7 was inactive. The results are compared to those from D-myo-inositol 1,4,5-trisphosphate (1), DL-scyllo-inositol 1,2,4-trisphosphate (2), DL-myo-inositol 1,2,4,5-tetrakisphosphate (3), scyllo-inositol 1,2,4,5-tetrakisphosphate (4), D-myo-inositol 2,4,5-trisphosphate (5), and D-chiro-inositol 1,3,4-trisphosphate (6). The protonation processes of 7 have also been investigated by P-31 NMR titration experiments.