Enantioselective Aminohydroxylation of Styrenyl Olefins Catalyzed by an Engineered Hemoprotein
作者:Inha Cho、Christopher K. Prier、Zhi‐Jun Jia、Ruijie K. Zhang、Tamás Görbe、Frances H. Arnold
DOI:10.1002/anie.201812968
日期:2019.3.4
Chiral 1,2‐aminoalcohols are widely represented in biologically active compounds from neurotransmitters to antivirals. While many synthetic methods have been developed for accessing aminoalcohols, the direct aminohydroxylation of alkenes to unprotected, enantioenriched aminoalcohols remains a challenge. Using directed evolution, we have engineered a hemoprotein biocatalyst based on a thermostable
A New Copper Acetate-Bis(oxazoline)-Catalyzed, Enantioselective Henry Reaction
作者:David A. Evans、Daniel Seidel、Magnus Rueping、Hon Wai Lam、Jared T. Shaw、C. Wade Downey
DOI:10.1021/ja0373871
日期:2003.10.1
A highly enantioselective, nitroaldol reactioncatalyzed by a chiral Cu(II) bis(oxazoline) complex has been developed. The reaction scope includes both aromatic and aliphatic aldehydes (15 examples) affording products in good yields and enantioselectivities (87-94% ee). An X-ray structure of the catalyst has been provided along with a rationalization of the sense of asymmetric induction.
已经开发了一种由手性 Cu(II) 双 (恶唑啉) 配合物催化的高对映选择性硝基醛醇反应。反应范围包括芳香族和脂肪族醛(15 个实施例),以良好的产率和对映选择性(87-94% ee)提供产物。已经提供了催化剂的 X 射线结构以及对不对称感应的合理化。
Processes for producing optically active 2-amino-1-phenylethanol derivatives
申请人:Daicel Chemical Industries, Ltd.
公开号:US20030143701A1
公开(公告)日:2003-07-31
An (R)-2-amino-1-phenylethanol derivative shown by the general formula (IIa)
1
wherein R
1
and R
5
represent a hydrogen atom, etc.; R
2
, R
3
and R
4
independently represent a halogen atom, etc., or a salt thereof, can readily be produced (1) by permitting a microorganism belonging to the genus Rhodosporidium, the genus Comamonas or the like to act on a mixture of corresponding (R)-form and (S)-form to asymmetrically utilize, or (2) by permitting a microorganism belonging to the genus Lodderomyces, the genus Pilimelia or the like to act on a corresponding aminoketone derivative to asymmetrically reduce. An (R,R)-1-phenyl-2-[(2-phenyl-1-alkylethyl)amino]ethanol derivative having a high optical purity can easily be obtained from the compound of the formula (IIa) or a salt thereof. Said derivative is useful as an intermediate for producing an anti-obesity agent and so on.