I2O5/DBU mediated direct α-phosphoryloxylation of ketones with H-phosphonates leading to α-hydroxyketone phosphates
摘要:
A simple and convenient procedure has been developed for the construction of alpha-hydroxyketone phosphates via I2O5/DBU mediated direct alpha-phosphoryloxylation of ketones with H-phosphonates. This new reaction proceeds through three steps involving alpha-iodination of ketones, oxidation of H-phosphonates, and nucleophilic substitution of alpha-iodo ketones to access a series of alpha-hydroxyketone phosphates of biological importance. (C) 2015 Elsevier Ltd. All rights reserved.
Disclosed herein are methods for synthesizing 1-(acyloxy)-alkyl prodrug derivatives of drugs through oxidation of 1-acyl-alkyl derivatives of drugs under anhydrous reaction conditions. The methods typically proceed stereospecifically, in high yield, do not require the use of activated intermediates and/or toxic compounds and are readily amenable to scale-up.