METHOD FOR THE STEREOSELECTIVE SYNTHESIS OF PHOSPHORUS COMPOUNDS
申请人:Meier Chris
公开号:US20110028705A1
公开(公告)日:2011-02-03
The present invention relates to a method for stereoselective synthesis of phosphorus compounds, whereby in the first reaction step a chiral auxiliary on the phosphorus atom of phosphoryl chloride, thiophosphoryl chloride or phosphorus trichloride is covalently bonded, the product from the first reaction step is reacted in the following step with an alcohol, thiol, or amine as the nucleophile in the presence of a base, and in the last step the chiral auxiliary is displaced from the product of the following step by a nucleophile.
-2-thione 1 was used as a chiral auxiliary to introduce the stereochemistry at the phosphorus atom. In the last step of the developed reaction sequence, the nucleoside analogue d4T was introduced to a stereochemically pure phosphordiamidate which led to the formation of the almost diastereomerically pure phosphoramidate prodrugs 8a−d (≥95% de). As expected, the individually prepared diastereomers of
Diastereoselective Synthesis of cycloSaligenyl-Nucleosyl-Phosphotriesters
作者:Edwuin H. Rios Morales、Jan Balzarini、Chris Meier
DOI:10.1002/chem.201002657
日期:2011.2.1
AbstractA diastereoselective synthesis of cycloSal‐phosphotriesters (cycloSal=cycloSaligenyl) based on chiral auxiliaries has been developed that allows the synthesis of single diastereomers of the cycloSal‐pronucleotides. In previously described synthesis routes, the cycloSal‐compounds were always obtained as 1:1 diastereomeric mixtures that could be separated in only rare cases. However, it was shown that the diastereomers have different antiviral activity, toxicity, and hydrolysis stabilities. Here, first a chiral thiazoline derivative was used to prepare nonsubstituted and 5‐methyl‐cycloSal‐phosphotriesters in 48 and ≥95 % de (de=diastereomeric excess). However, this approach failed to give the important group of 3‐substituted cycloSal‐nucleotides. Therefore, two other chiral groups were discovered that allowed the synthesis of (RP)‐ and (SP)‐3‐methyl‐cycloSal‐phosphotriesters as well. The antiviral activity was found to be five‐ to 20‐fold different between the two individual diastereomers, which proved the importance of this approach.
VERFAHREN ZUR STEREOSELEKTIVEN SYNTHESE VON PHOSPHORVERBINDUNGEN
申请人:Universität Hamburg
公开号:EP2262820B1
公开(公告)日:2013-06-19
[DE] VERFAHREN ZUR STEREOSELEKTIVEN SYNTHESE VON PHOSPHORVERBINDUNGEN<br/>[EN] METHOD FOR THE STEREOSELECTIVE SYNTHESIS OF PHOSPHORUS COMPOUNDS<br/>[FR] PROCÉDÉ DE SYNTHÈSE STÉRÉOSÉLECTIVE DE COMPOSÉS PHOSPHORÉS
申请人:UNIV HAMBURG
公开号:WO2009121347A1
公开(公告)日:2009-10-08
Die vorliegende Erfindung betrifft ein Verfahren zur stereoselektiven Synthese von Phosphorverbindungen, wobei im ersten Reaktionsschritt ein chirales Auxiliar am Phosphoratom von Phosphorylchlorid, Thiophosphorylchlorid oder Phosphortrichlorid kovalent gebunden wird, das Produkt aus dem ersten Reaktionsschritt im Folgeschritt mit einem Alkohol, Thiol oder Amin als Nucleophil in Gegenwart einer Base in Reaktion gebracht wird, und im letzten Schritt das chirale Auxiliar durch ein Nucleophil aus dem Produkt des Folgeschrittes verdrängt wird.