Synthesis of Adenophostin Analogues Lacking the Adenine Moiety as Novel Potent IP3 Receptor Ligands: Some Structural Requirements for the Significant Activity of Adenophostin A
摘要:
1-O-Tetrahydrofuranyl-alpha-D-glucopyranose derivatives 5-8 were designed and synthesized as novel IP3 receptor ligands. The glycosidation reactions between fluoroglycosyl donor 23 and tetrahydrofuran derivatives 11-14 as glycosyl accepters selectively gave the corresponding alpha-glycosides, which were converted into the target Compounds 5-8 via the introduction of phosphate groups using the phosphoramidite method. Among these compounds, 1-O-tetrahydrofuranyl-alpha-D-glucopyranose trisphosphate derivatives 5 and 8 significantly inhibited the binding of [H-3] IP3 to IP3 receptor from porcine cerebella, with IC50 values of 25 and 27 nM, respectively, which were comparable to the affinity of IP3 itself.
Synthesis of 1-0-[(3S,4R)-3-hydroxytetrahydrofuran-4-yl]-α-D-glucopyranoside 3,4,3′-trisphosphate as a novel potent IP3 receptor ligand
摘要:
1-O-[(3S,4R)-3-Hydroxytetrahydrofuran-4-yl]-alpha-D-glucopyranoside 3,4,3'-trisphosphate (5) was designed and synthesized as a novel IP3 receptor ligand. This compound bound strongly to IP3 receptor from porcine cerebella with an affinity comparable to that of IP3. (C) 1998 Elsevier Science Ltd. All rights reserved.