THE ACTION OF GRIGNARD REAGENTS ON OXIMES. III. THE MECHANISM OF THE ACTION OF ARYLMAGNESIUM HALIDES ON MIXED KETOXIMES. A NEW SYNTHESIS OF ETHYLENEIMINES
Scavenger assisted combinatorial process for preparing libraries of amides, carbamates and sulfonamides
申请人:ELI LILLY AND COMPANY
公开号:EP0825164A2
公开(公告)日:1998-02-25
This invention relates to a novel solution phase process for the preparation of amide, carbamate, and sulfonamide combinatorial libraries. These libraries have utility for drug discovery and are used to form wellplate components of novel assay kits.
The present application relates to a novel method of preparing L-threo-dihydroxyphenylserine (droxidopa). Specifically, the application is directed to a method of preparing droxidopa via a deprotection step that is an alternative to deprotection steps that have been previously disclosed. The new deprotection strategy is advantageous in that it avoids the need to use hydrogenolysis or hydrazine.
[EN] PROCESSES FOR THE PREPARATION OF DIASTEREOMERICALLY AND ENANTIOMERICALLY ENRICHED OXAZOLINES<br/>[FR] PROCÉDÉS DE PRÉPARATION D'OXAZOLINES DIASTÉRÉOISOMÉRIQUEMENT ET ÉNANTIOMÉRIQUEMENT ENRICHIES
申请人:QUÍMICA SINTÉTICA S A
公开号:WO2017081206A1
公开(公告)日:2017-05-18
The invention relates to an industrially viable and advantageous process for the preparation of (2S,3R)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid, having the following formula (I) generally known as Droxidopa, or of intermediates useful in the synthesis thereof.