[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF LACOSAMIDE<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DE LACOSAMIDE
申请人:UNICHEM LAB LTD
公开号:WO2018060781A1
公开(公告)日:2018-04-05
The present invention relates to an improved process for the synthesis of (R)- Lacosamide in which free base of O-methyl-N-benzyl-D-Serinamide is not isolated before acylation. The process avoids the use of column chromatography and chiral resolution for the preparation of different stages of Lacosamide.
High-Yielding Staudinger Ligation of a Phosphinothioester and Azide To Form a Peptide
作者:Bradley L. Nilsson、Laura L. Kiessling、Ronald T. Raines
DOI:10.1021/ol006739v
日期:2001.1.1
see text] The Staudingerligation can be used to couple a peptide with a C-terminal phosphinothioester to another with an N-terminal alpha-azido group to form a single peptide that contains no residual atoms. Here diphenylphosphinomethanethiol thioesters are shown to give high isolated yields for this transformation. This finding provides precedent for a powerful and versatile new method for the total
Functionalized DL-amino acid derivatives. Potent new agents for the treatment of epilepsy
作者:Judith D. Conley、Harold Kohn
DOI:10.1021/jm00386a021
日期:1987.3
Structural analogues of the potent known anticonvulsant agent N-acetyl-DL-alanine N-benzylamide (1a) have been prepared (16 examples). The pharmacological activities of these products were evaluated in the maximal electroshock seizure (MES), the subcutaneous pentylenetetrazole seizure threshold (sc Met), and the rotorod (Tox) tests. The median effective doses (ED50) and the median toxic doses (TD50)
A Photo-Triggered Traceless Staudinger-Bertozzi Ligation Reaction
作者:Peng Hu、Tianshi Feng、Chi-Chung Yeung、Chi-Kin Koo、Kai-Chung Lau、Michael H. W. Lam
DOI:10.1002/chem.201601807
日期:2016.8.8
photo‐excitation. Broadband photolysis at 360–400 nm in aqueous organic solvents induced heterolytic cleavage of its anthracenylmethyl–phosphorus bond, releasing a diphenylphosphinothioester (2) as an efficient traceless Staudinger–Bertozzi ligation reagent. The quantum yield of such a photo‐induced heterolytic bond‐cleavage at the optimal wavelength of photolysis (376 nm) at room temperature is ≥0.07. This work
The amidation reaction is of a very particular interest, especially in the pharmaceutical industry and always requires the activation of the acid with a large excess of reactants. Therefore, a large amount of waste is generated. In order to reduce the environmental impact of such reaction, we have developed enzymatic amidation conditions which are compatible with a wide range of amines and acids, in