METHOD FOR PRODUCING 5-HYDROXYMETHYLFURFURAL IN THE PRESENCE OF A LEWIS ACID CATALYST AND/OR A HETEROGENEOUS BASE CATALYST AND A HOMOGENEOUS ORGANIC BRØNSTED ACID CATALYST IN THE PRESENCE OF AT LEAST ONE APROTIC POLAR SOLVENT
申请人:IFP Energies Nouvelles
公开号:US20190092740A1
公开(公告)日:2019-03-28
The invention relates to a process for the production of 5-hydroxymethylfurfural from a feedstock comprising at least one sugar using a combination of at least one catalyst selected from the homogeneous Lewis acids, the heterogeneous Lewis acids and the heterogeneous bases and at least one homogeneous Brønsted acid catalyst selected from the families of the thioureas, the sulphonic acids and the phosphorus-containing organic compounds, alone or in a mixture, in the presence of at least one aprotic polar solvent, at a temperature comprised between 30° C. and 300° C., and at a pressure comprised between 0.1 MPa and 10 MPa.
Intermolecularreactions of planar chiral 9-membered diallylic amides provide a variety of bicyclic compounds with central chiralities in a stereospecific fashion with high group selectivity. Lewis-acid-promoted intramolecularreactions of the obtained bicyclic compounds provide transannular products in a stereospecific fashion. Furthermore, a direct transannular reaction of diallylic amide involving
[EN] PROCESS FOR PREPARING DIASTEREOMERICALLY ENRICHED PHOSPHORAMIDATE DERIVATIVES OF NUCLEOSIDE COMPOUNDS FOR TREATMENT OF VIRAL INFECTIONS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE PHOSPHORAMIDATES ENRICHIS EN DIASTÉRÉO-ISOMÈRES DE COMPOSÉS DE NUCLÉOSIDES, DESTINÉS AU TRAITEMENT D'INFECTIONS VIRALES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014008236A1
公开(公告)日:2014-01-09
The present invention is directed to a process for preparing diastereomerically enriched nucleoside phosphoramidates having the formula I:
本发明涉及一种制备具有化学式I的对映异构体富集的核苷磷酰胺酯的方法。
PROCESS FOR PREPARING DIASTEREOMERICALLY ENRICHED PHOSPHORAMIDATE DERIVATIVES OF NUCLEOSIDE COMPOUNDS FOR TREATMENT OF VIRAL INFECTIONS
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:US20150183818A1
公开(公告)日:2015-07-02
The present invention is directed to a process for preparing diastereomerically enriched nucleoside phosphoramidates having the formula I:
本发明涉及一种制备式I的对映体富集核苷酸磷酰胺酯的方法:
[EN] STEREOSELECTIVE MANUFACTURE OF SELECTED PURINE PHOSPHORAMIDATES<br/>[FR] PRODUCTION STÉRÉOSÉLECTIVE DE PHOSPHORAMIDATES DE PURINE SÉLECTIONNÉS
申请人:ATEA PHARMACEUTICALS INC
公开号:WO2022040473A1
公开(公告)日:2022-02-24
The present invention provides stereoselective processes of manufacture for the phosphoramidate nucleotide Compound 1 or a pharmaceutically acceptable salt thereof.