<b>Hexafluoroacetone as a Protecting and Activating Reagent: Synthesis of New Types of Fluoro-Substituted α-Amino, α-Hydroxy and α-Mercapto Acids</b>
作者:Klaus Burger、Sergej Osipov、Torsten Lange、Pavel Tsouker、Jan Spengler、Lothar Hennig、Beate Koksch、Stefan Berger、Salah El-Kousy
DOI:10.1055/s-2004-829131
日期:——
(S)-malic, (S)-citramalic and (S,R)-thiomalic acid, new types of 4,4-difluoro-substituted a-ami- no-, a-hydroxy- and a-mercaptopentanoic acids have been synthe- sized, applying hexafluoroacetone as protecting and activating reagent. The new partially fluorinated a-functionalized carboxylic acids represent interesting monomers for peptide and depsipeptide modification and for rational design and elucidation
从(S)-天冬氨酸、(S)-苹果酸、(S)-柠苹果酸和(S,R)-硫代苹果酸开始,新型4,4-二氟取代的α-氨基-、α-羟基-和α-巯基戊酸已被合成,使用六氟丙酮作为保护和活化试剂。新的部分氟化的α-官能化羧酸代表了用于肽和缩肽修饰以及合理设计和阐明二级结构的有趣单体。