[EN] A PYRIDINYL SUBSTITUTED THIOHYDANTOIN PHARMACEUTICAL INTERMEDIATE AND ITS PREPARATION METHOD AND USE<br/>[FR] INTERMÉDIAIRE PHARMACEUTIQUE DE THIOHYDANTOÏNE SUBSTITUÉ PAR PYRIDINYLE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION
申请人:[en]SUZHOU KINTOR PHARMACEUTICALS, INC.
公开号:WO2024022475A1
公开(公告)日:2024-02-01
The present invention belongs to the technical field of pharmaceutical synthesis technology and relates to a pyridyl-substituted thioglycolide intermediate for pharmaceutical use and its preparation method and use. In particular, the present invention discloses compounds of formula (I), which can be used to prepare thioglycolide drugs, and solves the defects of the existing process such as harsh conditions and low yields. The present invention also discloses various preparation methods of compounds of formula (I), which involve novel processes for some upstream intermediates (for example, compounds of formula (II) in the form of carboxylic acids). In addition, the present invention discloses for the first time a method for the synthesis of compounds of formula (I) to obtain thioglycolide analogues by ring closing reaction with aryl isothiocyanate.