De novo synthesis of the enantiomers Ins(1,2,3,4)P4 and Ins(1,2,3,6)P4—regiospecificity of their enzymatic dephosphorylation
摘要:
(T)he first total synthesis of Ins(1,2,3,4)P-4 and Ins(1,2,3,6)P-4 is presented. Starting from p-benzoquinone, we took advantage of the C-2-symmetry of conduritol-B intermediates. The target compounds were dephosphorylated by several enzymes, and the resulting InsP(3) isomers, were identified. Some of these enzymatic conversions were found to be preparatively applicable and to allow the synthesis of Ins(1,2,3)P-3, Ins(2,3,6)P-3 and Ins(1,2,4)P-3. (C) 2000 Elsevier Science Ltd. All rights reserved.
De novo synthesis of the enantiomers Ins(1,2,3,4)P4 and Ins(1,2,3,6)P4—regiospecificity of their enzymatic dephosphorylation
摘要:
(T)he first total synthesis of Ins(1,2,3,4)P-4 and Ins(1,2,3,6)P-4 is presented. Starting from p-benzoquinone, we took advantage of the C-2-symmetry of conduritol-B intermediates. The target compounds were dephosphorylated by several enzymes, and the resulting InsP(3) isomers, were identified. Some of these enzymatic conversions were found to be preparatively applicable and to allow the synthesis of Ins(1,2,3)P-3, Ins(2,3,6)P-3 and Ins(1,2,4)P-3. (C) 2000 Elsevier Science Ltd. All rights reserved.
Flexible Stereo- and Regioselective Synthesis ofmyo-Inositol Phosphates(Part 1): Via Symmetrical Conduritol B Derivatives
作者:Michael A. L. Podeschwa、Oliver Plettenburg、Hans-Josef Altenbach
DOI:10.1002/ejoc.200400911
日期:2005.7
myo-inositol phosphates. Optically pure compounds can be prepared, in both forms, from p-benzoquinone by enzymatic resolution of a diacetoxyconduritol key intermediate. Monosubstituted inositol derivatives can be obtained by breaking the C2 symmetry of conduritolBderivatives. A wide variety of myo-inositol phosphates can be synthesized by combining the previously reported symmetrical approach with
Process for the preparation of myoinositol derivatives
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0262227A1
公开(公告)日:1988-04-06
Myoinositol phosphates and salts thereof represented by general formula (I) and process for their preparation. The myoinositol derivatives are prepared by reacting a phosphorylating agent with a myoinositol derivative wherein sites other than those to be substituted by phosphate residues are substituted by a substituent capable of being eliminated by catalytic reduction, and subjecting the product to catalytic reduction.
Divergent Syntheses of All Possible Optically Active Regioisomers of <i>m</i><i>yo</i>-Inositol Tris- and Tetrakisphosphates
作者:Sung-Kee Chung、Yong-Uk Kwon、Jung-Han Shin、Young-Tae Chang、Changgook Lee、Boo-Gyo Shin、Kyung-Cheol Kim、Mahn-Joo Kim
DOI:10.1021/jo0257694
日期:2002.8.1
Since the discovery Of D-myo-inositol 1,4,5-trisphosphate, which plays a pivotal role as a second messenger in transmembrane signaling, the scope of the phosphoinositide-based signaling processes has been continually expanding. However, the clear understanding of the molecular signal transduction mechanisms including the functions of newly found IPn is still lacking. As a continuing effort to our previously reported syntheses of all possible 39 optically inactive regioisomers of myoinositol phosphates (IPn; n = 1-6), we synthesized all possible optically active regioisomers of myo-IP3 and myo-IP4 using chiral IBz(3)s and IBz(2)s, respectively. A series of procedures involving CRL-catalyzed enzymatic resolution of racemic 1,2:5,6-di-O-isopropylidene-myo-inositoI and base-catalyzed benzoyl migration in tri- and dibenzoyl-isopropylidene-myo-inositol afforded eight enantiomeric pairs of IBz(3) and six enantiomeric pairs of IBz(2), respectively. Phosphorylation of these intermediates by the phosphitylation and oxidation procedure gave the target products.