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Synthesis of Densely Phosphorylated Bis-1,5-Diphospho- myo-Inositol Tetrakisphosphate and its Enantiomer by Bidirectional P-Anhydride Formation.
- Source :
- Angewandte Chemie International Edition; Sep2014, Vol. 53 Issue 36, p9508-9511, 4p
- Publication Year :
- 2014
-
Abstract
- The ubiquitous mammalian signaling molecule bis-diphosphoinositol tetrakisphosphate (1,5-(PP)<subscript>2</subscript>-myo-InsP<subscript>4</subscript>, or InsP<subscript>8</subscript>) displays the most congested three-dimensional array of phosphate groups found in nature. The high charge density, the accumulation of unstable P-anhydrides and P-esters, the lack of UV absorbance, and low levels of optical rotation constitute severe obstacles to its synthesis, characterization, and purification. Herein, we describe the first procedure for the synthesis of enantiopure 1,5-(PP)<subscript>2</subscript>-myo-InsP<subscript>4</subscript> and 3,5-(PP)<subscript>2</subscript>-myo-InsP<subscript>4</subscript> utilizing a C<subscript>2</subscript>-symmetric P-amidite for desymmetrization and concomitant phosphitylation followed by a one-pot bidirectional P-anhydride-forming reaction that combines sixteen chemical transformations with high efficiency. The configuration of these materials is unambiguously shown by subsequent X-ray analyses of both enantiomers after being individually soaked into crystals of the kinase domain of human diphosphoinositol pentakisphosphate kinase 2. [ABSTRACT FROM AUTHOR]
- Subjects :
- CHEMICAL synthesis
ENANTIOMERS
ANHYDRIDES
PHOSPHATES
OPTICAL rotation
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 53
- Issue :
- 36
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 97729657
- Full Text :
- https://doi.org/10.1002/anie.201404398