Epoxide formation by continuous in-situ synthesis process
申请人:G. D. Searle & Co.
公开号:US06127556A1
公开(公告)日:2000-10-03
In a method of preparing an aminoepoxide wherein a protected aminoaldehyde is reacted with a halomethyl organometallic reagent in an appropriate solvent at a temperature above -80.degree. C., wherein said halomethyl organometallic reagent is formed by reaction between an organometallic reagent and a dihalomethane, the improvement comprising flowing said protected aminoaldehyde into a mixing zone maintained at a temperature below 0.degree. C., also flowing said halomethyl organometallic reagent in said mixing zone for contacting in said mixing zone with said protected aminoaldehyde and also withdrawing from said mixing zone reaction products of said protected aminoaldehyde and said halomethyl organometallic reagent.
Methods of preparing retroviral proteases inhibitor intermediates
申请人:Ng S. John
公开号:US20060270855A1
公开(公告)日:2006-11-30
Chiral hydroxyethylamine, hydroxyethylurea or hydroxyethylsulfonamide isostere containing retroviral protease and renin inhibitors can be prepared by multi-step syntheses that utilize key chiral amine intermediates. This invention is a cost effective method of obtaining such key chiral amine intermediates enantiomerically, diastereomerically and chemically pure. The method is suitable for large scale (multikilogram) productions. This invention also encompasses organic acid and inorganic acid salts of the amine intermediates.
Method for making intermediates useful in synthesis of retroviral protease inhibitors
申请人:G.D. SEARLE & CO.
公开号:EP0855388A2
公开(公告)日:1998-07-29
A synthesis is described for intermediates which are readily amenable to the large scale preparation of hydroxyethylurea-based chiral HIV protease inhibitors. The method includes forming a cyanohydrin from a chiral alpha amino aldehyde.
本文介绍了一种易于大规模制备羟乙基脲类手性 HIV 蛋白酶抑制剂的中间体合成方法。该方法包括从手性α-氨基醛中形成氰醇。
Preparation of aminoepoxides from aminoaldehydes and an in situ formed halomethyl organometallic reagent
申请人:G.D. SEARLE & CO.
公开号:EP0970066B1
公开(公告)日:2003-09-17
METHOD FOR MAKING INTERMEDIATES USEFUL IN SYNTHESIS OF RETROVIRAL PROTEASE INHIBITORS