[EN] A PROCESS FOR INDUSTRIAL PREPARATION OF [(S)-N-TERT BUTOXYCARBONYL-3-HYDROXY]ADAMANTYLGLYCINE<br/>[FR] PROCÉDÉ DE PRÉPARATION INDUSTRIELLE DE LA [(S)-N-TERT BUTOXYCARBONYL-3-HYDROXY]ADAMANTYLGLYCINE
申请人:LEE PHARMA LTD
公开号:WO2014057495A1
公开(公告)日:2014-04-17
A commercially viable process for industrial preparation of [(S)-n-tert butoxycarbonyl-3-hydroxy]adamantylglycine which is a key intermediate for saxagliptin synthesis and is represented by compound of Formula-VI. The compound-VI obtained by the process of present invention has more than 99.5% HPLC purity, not more than 0.15 % of dihydroxy impurity, not more than 0.05% of isomer impurity and not more than 0.1% of any unknown impurity. Formula (VI).
The present invention relates to antimicrobial cyclic peptides, which display a reduced hemolytic activity and optionally antimicrobial activity in comparison to parent antimicrobial cyclic peptides from which they are derived. In one embodiment the parent cyclic peptide is gramicidin S. There is also provided a method of providing novel derivative antimicrobial cyclic peptides which have been developed from a parent antimicrobial cyclic peptide and which display a reduced haemolytic activity and/or antimicrobial activity compared to the parent molecule from which they are derived.
[EN] PROCESS FOR THE PREPARATION OF DPP-IV INHIBITOR<br/>[FR] PROCÉDÉ DE PRÉPARATION D'INHIBITEUR DPP-IV
申请人:MSN LAB LTD
公开号:WO2013111158A2
公开(公告)日:2013-08-01
The present invention provides a process for the preparation of (l S,3S,5S)-2-[(2S)-2- amino-2-(3 -hydroxyadamantan- l-yl)acetyl]-2-azabicyclo[3.1.0]hexane-3-carbonitrile and its pharmaceutically acceptable salts thereof, represented by the compound of formula- 1.