225640-79-9Relevant academic research and scientific papers
Synthesis of the 2- and 4-monomethyl ethers and the 4-deoxy-4-fluoro derivative of 4-cyanophenyl 1,5-dithio-β-D-xylopyranoside as potential antithrombotic agents
Horton,Li,Barberousse,Bellamy,Renaut,Samreth
, p. 39 - 48 (1993)
The title glycoside undergoes acetonation with 2-methoxypropene to give a 2:1 mixture of the crystalline 2,3- and 3,4-isopropylidene acetals in 94% yield, which upon methylation under controlled conditions followed by deacetonation afforded the respective 4- and 2-monomethyl ethers. The 2,3-acetal underwent reaction with diethylaminosulfur trifluoride to introduce fluorine at C-4 with net retention of stereochemistry, but the 3,4-acetal under comparable conditions underwent migration of the arylthio group to C-2 and fluorination at C-1, with stereochemical retention at both positions. The title glycoside undergoes acetonation with 2-methoxypropene to give a 2:1 mixture of the crystalline 2,3- and 3,4-isopropylidene acetals in 94% yield, which upon methylation under controlled conditions followed by deacetonation afforded the respective 4- and 2-monomethyl ethers. The 2,3-acetal underwent reaction with diethylaminosulfur trifluoride to introduce fluorine at C-4 with net retention of stereochemistry, but the 3,4-acetal under comparable conditions underwent migration of the arylthio group to C-2 and fluorination at C-1, with stereochemical retention at both positions.
Chemical interconversions of 4-cyanophenyl 1,5-dithio-β-D-xylopyranoside (Beciparcil): Structural modification at the C-4 position
Li, Yun,Horton, Derek,Barberousse, Veronique,Bellamy, Francois,Renaut, Patrice,Samreth, Soth
, p. 161 - 167 (2007/10/03)
The title dithioxyloside 1, an orally active antithrombotic agent, as its 2,3-isopropylidene acetal, was converted into the corresponding glycos-4-ulose, which served as precursor via reduction to the 4-epimer of 1 and via oximation-reduction to the 4-acetamido-4-deoxy 4-epimer of 1. Copyright (C) 1998 Elsevier Science Ltd.
