An Unusual β-Vinyl Effect Leading to High Efficiency and Enantioselectivity of the Amidase, Nitrile Biotransformations for the Preparation of Enantiopure 3-Arylpent-4-enoic Acids and Amides and Their Applications in Synthesis
作者:Ming Gao、De-Xian Wang、Qi-Yu Zheng、Mei-Xiang Wang
DOI:10.1021/jo061664f
日期:2006.12.1
higher enantioselectivity against 3-arylpent-4-enoic acid amides than 3-arylpentanoic acid amides. Under very mild conditions, nitrile biotransformations provided an efficient synthesis of highly enantiopure (R)-3-arylpent-4-enoic acids and (S)-3-arylpent-4-enoic acid amides, and their applications were demonstrated by the synthesis of chiral γ-amino acid, 2-pyrrolidinone, and 2-azepinone derivatives.
研究了红球菌红球菌AJ270(一种含腈水合酶/酰胺酶的微生物全细胞催化剂)催化的3-芳基-4-烯腈的生物转化,并且底物对酰胺酶的生物催化效率和对映选择性具有不同寻常的β-乙烯基效应。观测到的。虽然3-芳基戊-4-烯腈和3-苯基戊烯腈通过较少的R-对映选择性腈水合酶有效地水合,但酰胺酶比3-芳基戊酸对3-芳基戊-4-烯酸酰胺显示出更高的活性和更高的对映选择性。酰胺。在非常温和的条件下,腈类生物转化提供了高对映纯(R)-3-芳基戊-4-烯酸和(S)-3-芳基戊-4-烯酸酰胺及其应用已通过合成手性γ-氨基酸,2-吡咯烷酮和2-氮杂环庚酮衍生物得到了证明。