Organic biomolecules bind to phosphate through borate linkages in aqueous solutions

Authors : Nazik AYDOĞMUŞ, Dursun Ali KÖSE, Michael Andrew BECKETT, Birgül ZÜMREOĞLU KARAN

Pages : 617-628

Doi:10.3906/kim-1309-55

View : 14 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Solutions of salicyclic, ascorbic, and citric acids were reacted with boric acid, followed by NaH2PO4. The products, triphosphateborate ester of salicylic acid insert ignore into journalissuearticles values(1);, orthosphateborate ester of ascorbic acid insert ignore into journalissuearticles values(2);, triphosphateborate ester of ascorbic acid insert ignore into journalissuearticles values(3);, and orthosphateborate ester of citric acid insert ignore into journalissuearticles values(4);, were flash precipitated with cold acetone and characterised by microanalysis, thermal analysis, FT-IR, Raman, 11B NMR, 31P MAS NMR, and mass spectroscopic techniques. Analytical results indicated the presence of --C--O--B--O--P-- linkages with the attached phosphate groups varying between orthophosphate and triphosphate, depending on the starting material. The biomolecules studied in this work may serve as models in the B--P-organic system and the results would provide a possible contribution to boron prebiotic chemistry.
Keywords : Borate complex, phosphate ester, boric acid, 31P MAS NMR, 11B NMR