This invention relates to methods and small molecules having a phosphate group that can be used to inhibit phosphate transport and to treat or prevent diseases that are related to disorders in the maintenance of normal serum phosphate levels.
Organophosphorus Compounds. II. Preparation of Phosphonic Acid Esters using the Dicyclohexylcarbodiimide Reagent
作者:JA Maynard、JM Swan
DOI:10.1071/ch9630609
日期:——
Mono- and diesters of phosphonic acids are
conveniently prepared by reaction of a phosphonic acid with appropriate
quantities of NN'-dicyclohexylcarbodiimide and an alcohol or phenol in pyridine
solution.
We report the synthesis, physicochemical characterization, and crystalstructure of Cu-SP (SP = styrylphosphonic acid, H2O3PCH=CH2(C6H5)), the first reported example of a metal derivative of SP. The starting SP acid was fullycharacterized by X-ray single-crystal diffractometry, elemental analysis (C and H), 31P-NMR, 13C-NMR, 1H-NMR, HPLC, UV–vis, MS, TG, and FT-IR spectroscopy. The copper(II) derivative
An oral composition dentifrice comprising an orally acceptable vehicle, about 5-30% by weight of a siliceous polishing agent, a substantially water-insoluble noncationic antibacterial antiplaque agent, such as 2,4,4'-trichloro-2'-hydroxydiphenyl ether (triclosan), and an antibacterial-enhancing agent which enhances the delivery of said antibacterial agent to, and retention thereof on, oral surfaces, wherein said antiplaque agent is substantially completely dissolved in saliva present during tooth and gum cleaning in a solubilizing agent therefor. The solubilizing agent may be a humectant polyol such as propylene glycol, dipropylene glycol and hexylene glycol; a cellosolve such as methyl cellosolve and ethyl cellosolve; a vegetable oil or wax containing at least about 12 carbon atoms in a straight chain such as olive oil, castor oil and petrolatum; or an ester such as ethyl acetate, amyl acetate, glyceryl tristearate and benzyl benzoate.
Styrene phosphonic acid (SPA) can be formed the reaction of phosphorous acid with acetophenone, preferably in the presence of a Lewis acid catalyst, to form a hydroxy adduct intermediate thereof which is then reacted with acetic anhydride to form the acyl derivative of the hydroxy adduct, followed by removal of an acetic acid moiety therefrom, preferably in the presence of an acidic catalyst, to form the styrene phosphonic acid product.