Ring-Closing Metathesis on Commercial Scale: Synthesis of HCV Protease Inhibitor Simeprevir
摘要:
The key macrocyclization step in the synthesis of simeprevir, a hepatitis C virus (HCV) antiviral drug, was studied. N-Boc substitution on the diene precursor changes the site of insertion of the metathesis catalyst and, consequently, the kinetic model of the ring closing metathesis (RCM), enabling a further increase in the macrocyclization efficiency under simulated high dilution (SHD) conditions. NMR of the inserted species of both first and second generation RCM catalysts are reported and discussed.
Process for the preparation of macrocyclic compounds
申请人:Gantz Francois
公开号:US20080269502A1
公开(公告)日:2008-10-30
The present invention relates to a new process for the preparation of diene compounds of the
formula I wherein R
1
is an amino protecting group and X is a halogen atom which may serve as intermediates for the manufacture of macrocyclic HCV protease inhibitors.
Ring-Closing Metathesis on Commercial Scale: Synthesis of HCV Protease Inhibitor Simeprevir
作者:András Horváth、Dominique Depré、Wim A. A. Vermeulen、Stijn L. Wuyts、Syuzanna R. Harutyunyan、Grégori Binot、Jef Cuypers、Wouter Couck、Dirk Van Den Heuvel
DOI:10.1021/acs.joc.8b03124
日期:2019.4.19
The key macrocyclization step in the synthesis of simeprevir, a hepatitis C virus (HCV) antiviral drug, was studied. N-Boc substitution on the diene precursor changes the site of insertion of the metathesis catalyst and, consequently, the kinetic model of the ring closing metathesis (RCM), enabling a further increase in the macrocyclization efficiency under simulated high dilution (SHD) conditions. NMR of the inserted species of both first and second generation RCM catalysts are reported and discussed.
METHOD FOR PRODUCING OPTICALLY ACTIVE 1-AMINO-2-VINYLCYCLOPROPANECARBOXYLIC ACID ESTER
申请人:Aikawa Toshiaki
公开号:US20120130116A1
公开(公告)日:2012-05-24
1-Amino-2-vinylcyclopropanecarboxylic acid ester, which is useful as a synthetic intermediate of pharmaceuticals, can be produced by a process of producing 1-amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (4):
including a step of hydrolysis of an optically active 1-N-(arylmethylene)amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (3):
which is obtained by reacting an N-(arylmethylene)glycine ester represented by formula (1):
with a compound represented by formula (2):
in the presence of a base and an optically active quaternary ammonium salt.