Photometric Characterization of the Reductive Amination Scope of the Imine Reductases from<i>Streptomyces tsukubaensis</i>and<i>Streptomyces ipomoeae</i>
reductive amination catalyzed by two promising imine reductases is established in a rapid photometric NADPH assay. Substrates ranging from aldehydes to ketones and from primary to secondaryamines are accepted, thus giving access to various secondary and tertiaryamine products.
Mechanistic Insight into the Catalytic Promiscuity of Amine Dehydrogenases: Asymmetric Synthesis of Secondary and Primary Amines
作者:Vasilis Tseliou、Marcelo F. Masman、Wesley Böhmer、Tanja Knaus、Francesco G. Mutti
DOI:10.1002/cbic.201800626
日期:2019.3.15
Biocatalytic asymmetric amination of ketones, by using amine dehydrogenases (AmDHs) or transaminases, is an efficient method for the synthesis of α-chiral primary amines. A major challenge is to extend amination to the synthesis of secondary and tertiary amines. Herein, for the first time, it is shown that AmDHs are capable of accepting other amine donors, thus giving access to enantioenriched secondary
使用胺脱氢酶 (AmDH) 或转氨酶对酮进行生物催化不对称胺化是合成 α-手性伯胺的有效方法。一个主要挑战是将胺化扩展到仲胺和叔胺的合成。在此,首次表明 AmDH 能够接受其他胺供体,从而获得对映体富集的仲胺,转化率高达 43%。令人惊讶的是,在一些情况下,观察到对映体纯伯胺与预期仲胺的混杂形成。通过进行实际的实验室实验和计算实验,有人提出伯胺和仲胺的混杂形成是由于 AmDH 催化的前所未有的烟酰胺 (NAD) 依赖性形式转氨基作用所致。在自然界中,这种类型的机制通常由吡哆醛 5'-磷酸转氨酶而不是脱氢酶执行。最后,提出了一种催化途径,该途径合理化了混杂的 NAD 依赖性形式氨基转移活性,并解释了所观察到的产物混合物的形成。这项工作增加了对 NAD 依赖性胺化酶(如 AmDH)催化机制的理解,并将有助于进一步研究用于合成 α-手性仲胺和叔胺的氧化还原酶的合理工程。
Compositions and Methods for Treatment of Cardiovascular Disorders and Diseases
申请人:Technion Research & Development Foundation Ltd.
公开号:EP2433626A1
公开(公告)日:2012-03-28
The present invention is directed to the use of S-(-)-N-propargyl-1-aminoindan or a pharmaceutically acceptable salt thereof for the preparation of a pharmaceutical composition for prevention and/or treatment of a cardiovascular disease or disorder.