通过LC-MS在阿托伐他汀钙原料药中鉴定出七个与过程相关的杂质。这些杂质通过LC-MS鉴定。杂质的结构已通过现代光谱技术证实,如1使用合成的真实参考化合物进行1 H NMR和IR以及理化研究。杂质化合物的合成参考样品用于定量HPLC测定。通过新开发的梯度,反相高效液相色谱(HPLC)方法检测这些杂质。HPLC分析的系统适用性确定了分离的有效性。根据国际协调会议(ICH)验证了该分析方法在分析溶液的特异性,精密度,准确性,线性,稳健性和稳定性方面的优势,从而证明了新开发的HPLC方法的强大功能。
Enantioselective Synthesis of Allylboronates and Allylic Alcohols by Copper-Catalyzed 1,6-Boration
作者:Yunfei Luo、Iain D. Roy、Amaël G. E. Madec、Hon Wai Lam
DOI:10.1002/anie.201310380
日期:2014.4.14
Chiral secondary allylboronates are obtained in high enantioselectivities and 1,6:1,4 ratios by the copper‐catalyzed 1,6‐boration of electron‐deficient dienes with bis(pinacolato)diboron (B2(pin)2). The reactions proceed efficiently using catalyst loadings as low as 0.0049 mol %. The allylboronates may be oxidized to the allylicalcohols, and can be used in stereoselective aldehyde allylborations.
[EN] A NOVEL POLYMORPHIC FORM OF ATORVASTATIN SALTS<br/>[FR] NOUVELLE FORME POLYMORPHE DE SELS D'ATORVASTATINE
申请人:ORCHID CHEMICALS & PHARM LTD
公开号:WO2011089559A1
公开(公告)日:2011-07-28
The present invention provides an improved process for the preparation of Atorvastatin of formula (I) or its salts, preferably hemicalcium salt with purity greater than 99.5% using novel salts of Atorvastatin such as N,N- dicyclohexylethylenediamine salt of Atorvastatin and novel polymorph of Atorvastatin sodium salt. Formula (I).
METHOD FOR THE PREPARATION OF ATORVASTATIN AND INTERMEDIATES USED THEREIN
申请人:Ahn Soon Kil
公开号:US20110015407A1
公开(公告)日:2011-01-20
The present invention relates to a novel method for preparing atorvastatin. According to the present invention, provided are a novel intermediate of the preparation of atorvastatin and a method of preparing large amounts of atorvastatin in a safe manner using the intermediate.
[EN] METHOD FOR THE PREPARATION OF ATORVASTATIN AND INTERMEDIATES USED THEREIN<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ATORVASTATINE ET INTERMÉDIAIRES UTILISÉS DANS LEDIT PROCÉDÉ
申请人:CHONG KUN DANG PHARM CORP
公开号:WO2009093776A1
公开(公告)日:2009-07-30
The present invention relates to a novel method for preparing atorvastatin. According to the present invention, provided are a novel intermediate of the preparation of atorvastatin and a method of preparing large amounts of atorvastatin in a safe manner using the intermediate.
PREPARATION PROCESS USEFUL IN SYNTHESIS OF ATORVASTATIN
申请人:Cho Dong-Ock
公开号:US20110112309A1
公开(公告)日:2011-05-12
The present invention relates to a preparation process useful in synthesis of atorvastatin, more particularly a process for preparing atorvastatin is effective in treating hyperlipemia, comprising protecting the dihydroxy group at C3 and C5 positions of the starting material cis-t-butyl-6-substituted-3,5-dihydroxy-hexanoate with trialkyl orthoformate, reducing the terminal nitro or cyano group to amine group, performing JV-alkylation by sequentially reacting with ethyl 4-fluorobenzene-2-haloacetate and isobutyryl chloride, cyclizing with JV,3-diphenylpropynamide, and performing deprotection and hydrolysis.