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Synthetic myo-inositol 1,4,5-triphosphate, Ins(1,4,5)P(3), and myo-inositol 1,3,4,5-tetraphosphate, Ins(1,3,4,5)P(4), continue to be valuable in biological studies. Inositol orthoesters have proved an important class of intermediate to access these compounds. We investigated the ability of steric bulk from a 4-O protecting group to direct DIBAL-H reduction of inositol orthobenzoates to generate the natural Ins(1,4,5)P(3) precursor 2,3,6-O-tribenzyl myo-inositol. Introduction of an equatorial 4-C-methyl group imparts totally selective reduction and we report the synthesis of novel 4-C-methyl-Ins(1,4,5)P(3) and 4-C-methyl-Ins(1,3,4,5)P(4).

Original publication




Journal article


Org Biomol Chem

Publication Date





1709 - 1715


Acids, Animals, Benzoates, Calcium, Cell Line, Hydrolysis, Inositol 1,4,5-Trisphosphate, Inositol Phosphates, Oxidation-Reduction, Stereoisomerism