Process for preparing 3-heteroaryl-3-hydroxypropanoic acid derivatives
申请人:——
公开号:US20040181058A1
公开(公告)日:2004-09-16
The invention relates to a process for preparing enantiomer-enriched 3-heteroaryl-3-hydroxypropanoic acid derivatives and 3-heteroaryl-1-aminopropan-3-ols, and to their use.
The present invention relates to compositions and uses of novel high penetration compositions or high penetration prodrugs (HPP), in particular HPPs for non-steroidal anti-inflammatory agents (NSAIAs), which are capable of crossing biological barriers with high penetration efficiency. The HPPs herein are capable of being converted to parent active drugs or drug metabolites after crossing the biological barrier and thus can render treatments for the conditions that the parent drugs or metabolites can. Additionally, due to the ability of penetrating biological barriers, the HPPs herein are capable of reaching areas that parent drugs may not be able to access or to render a sufficient concentration at the target areas and therefore render novel treatments. The HPPs herein can be administered to a subject through various administration routes. For example, the HPPs can be locally delivered to an action site of a condition with a high concentration due to their ability of penetrating biological barriers and thus obviate the need for a systematic administration. For another example, the HPPs herein can be systematically administer to a biological subject and enter the general circulation with a faster rate.
Verfahren zur Herstellung von 3-Heteroaryl-3-hydroxy-propansäurederivaten durch enantioselektive mikrobielle Reduktion
申请人:Saltigo GmbH
公开号:EP1405917B1
公开(公告)日:2013-08-14
US7553970B2
申请人:——
公开号:US7553970B2
公开(公告)日:2009-06-30
Acetic Acid Aldol Reactions in the Presence of Trimethylsilyl Trifluoromethanesulfonate
作者:C. Wade Downey、Miles W. Johnson、Daniel H. Lawrence、Alan S. Fleisher、Kathryn J. Tracy
DOI:10.1021/jo100828c
日期:2010.8.6
TMSOTf and a trialkylamine base, aceticacid undergoes aldol addition to non-enolizable aldehydes under exceptionally mild conditions. Acidic workup yields the β-hydroxy carboxylic acid. The reaction appears to proceed via a three-step, one-pot process, including in situ trimethylsilyl ester formation, bis-silyl ketene acetal formation, and TMSOTf-catalyzed Mukaiyama aldol addition. Independently synthesized