Enantioselective hydrogenation of α-ketoamides over Pt/Al2O3 modified by cinchona alkaloids
摘要:
Pyruvamide and its N-alkylated derivatives have been synthesised and hydrogenated enantioselectively to the corresponding alcohols over an alumina-supported Pt catalyst chirally modified by adsorbed cinchonidine. Depending on the substrate structure and reaction conditions, this catalyst system afforded ees up to 60%. This is the highest ee achieved hitherto with a solid catalyst in alpha-ketoamide hydrogenation. (C) 1997 Elsevier Science Ltd.
α-Keto amides were dimerized in the presence of SmI2 in THF to give substituted tartaric amides in moderate to good yields. Although the dimerization of the secondary keto amides did not proceed stereoselectively, racemic tartaric amides were produced exclusively in the case of the tertiary keto amides.
Inhibitors of serine proteases, particularly HCV NS3-NS4A protease
申请人:Perni Robert B.
公开号:US20080311079A1
公开(公告)日:2008-12-18
The present invention relates to compounds that inhibit serine protease activity, particularly the activity of hepatitis C virus NS3-NS4A protease. As such, they act by interfering with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The invention further relates to compositions comprising these compounds either for ex vivo use or for administration to a patient suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a patient by administering a composition comprising a compound of this invention. The invention further relates to processes for preparing these compounds.
INHIBITORS OF SERINE PROTEASES, PARTICULARLY HCV NS3-NS4A PROTEASE
申请人:Perni Robert B.
公开号:US20110104115A1
公开(公告)日:2011-05-05
The present invention relates to compounds that inhibit serine protease activity, particularly the activity of hepatitis C virus NS3-NS4A protease. As such, they act by interfering with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The invention further relates to compositions comprising these compounds either for ex vivo use or for administration to a patient suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a patient by administering a composition comprising a compound of this invention. The invention further relates to processes for preparing these compounds.
Aryl dihydropyridinones and piperidinone MGAT2 inhibitors
申请人:Bristol-Myers Squibb Company
公开号:US10966967B2
公开(公告)日:2021-04-06
The present invention provides compounds of Formula (I):
or a stereoisomer, or a pharmaceutically acceptable salt thereof, wherein all of the variables are as defined herein. These compounds are monoacylglycerol acyltransferase type 2 (MGAT2) inhibitors which may be used as medicaments.