METHOD FOR PREPARING AZETIDINONE COMPOUND AND INTERMEDIATE OF AZETIDINONE COMPOUND
申请人:Zhejiang Hisun Pharmaceutical Co., Ltd.
公开号:US20170121281A1
公开(公告)日:2017-05-04
Disclosed is a new method for preparing an azetidinone compound represented by formula (I). The carboxylic ketoester represented by formula (II) serves as the raw material and is subjected to Grignard addition, stereoselective dehydration, ester group reduction, hydroxyl group protection, addition with imine after condensation with a chiral auxiliary, cyclization and deprotection to obtain the compound represented by formula (I). The present invention has advantages of easily available raw material, a few synthetic steps, simple operation, high yield, good stereoselectivity and low cost, and can be used for industrial production.
CRYSTAL FORMS OF AZETIDINONE COMPOUNDS AND PREPARING METHODS THEREOF
申请人:Zhejiang Hisun Pharmaceutical Co., Ltd.
公开号:US20150218091A1
公开(公告)日:2015-08-06
The present invention provides crystal forms of the compound of (3R,4S)-4-(4-hydroxyphenyl)-3-[3-(4-fluorophenyl)-4-hydroxybut-2(Z)-enyl]-1-(4-fluorophenyl)-2-azetidinone (formula A). The crystal forms can be characterized by X-ray powder diffraction (XRPD) spectra, differential scanning calorimetry (DSC) spectra, infrared absorption spectra and so on. Meanwhile, the present invention also provides methods for preparing the crystal forms of the compound of formula A, pharmaceutical compositions and uses thereof.
Method for preparing azetidinone compound and intermediate of azetidinone compound
申请人:Zhejiang Hisun Pharmaceutical Co., Ltd.
公开号:US10364219B2
公开(公告)日:2019-07-30
Disclosed is a new method for preparing an azetidinone compound represented by formula (I). The carboxylic ketoester represented by formula (II) serves as the raw material and is subjected to Grignard addition, stereoselective dehydration, ester group reduction, hydroxyl group protection, addition with imine after condensation with a chiral auxiliary, cyclization and deprotection to obtain the compound represented by formula (I). The present invention has advantages of easily available raw material, a few synthetic steps, simple operation, high yield, good stereoselectivity and low cost, and can be used for industrial production.
[EN] CRYSTAL FORMS OF AZETIDINONE COMPOUNDS AND PREPARING METHODS THEREOF<br/>[FR] FORMES CRISTALLINES DE COMPOSÉS D'AZÉTIDINONE ET LEURS PROCÉDÉS DE PRÉPARATION
[EN] HYBUTIMIBE INTERMEDIATE AND PREPARATION METHOD THEREFOR<br/>[FR] INTERMÉDIAIRE D'HYSTÉÉTIMIBE ET SON PROCÉDÉ DE PRÉPARATION<br/>[ZH] 海泽麦布中间体及其制备方法