Synthesis of 2,5-Disubstituted Pyrrolidine Alkaloids <i>via</i>
A One-Pot Cascade Using Transaminase and Reductive Aminase Biocatalysts
作者:Bruna Z. Costa、James L. Galman、Iustina Slabu、Scott P. France、Anita J. Marsaioli、Nicholas J. Turner
DOI:10.1002/cctc.201801166
日期:2018.10.23
A multi‐enzymatic cascade process involving transaminases (TAs) and reductive aminases (RedAms) to produce enantiomerically pure 2,5‐disubstituted pyrrolidine alkaloids from their respective 1,4‐diketones is reported. Several TAs were screened and the best results for diketone monoamination were obtained with an R‐selective TA from Mycobacterium chlorophenicum and with an S‐selective TA from Bacillus
A highlyenantioselective Pd-catalyzed partial hydrogenation of simple 2,5-disubstituted pyrroles with a Brønsted acid as an activator has been successfully developed, providing chiral 2,5-disubstituted 1-pyrrolines with up to 92% ee.
[EN] PROCESS FOR PREPARING ALPHA-CARBOXAMIDE PYRROLIDINE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE PYRROLIDINE ALPHA-CARBOXAMIDE
申请人:BIOGEN MA INC
公开号:WO2020210485A1
公开(公告)日:2020-10-15
Disclosed are processes for preparing α-carboxamide pyrrolidine derivatives, in particular (2S,5R)-5-(4-((2-fluorobenzyl)oxy)phenyl)pyrrolidine-2-carboxamide, and intermediates for use in said processes along with processes for preparing said intermediates.
A Regio- and Stereoselective ω-Transaminase/Monoamine Oxidase Cascade for the Synthesis of Chiral 2,5-Disubstituted Pyrrolidines
作者:Elaine O'Reilly、Cesar Iglesias、Diego Ghislieri、Jennifer Hopwood、James L. Galman、Richard C. Lloyd、Nicholas J. Turner
DOI:10.1002/anie.201309208
日期:2014.2.24
Biocatalytic approaches to the synthesis of optically pure chiral amines, starting from simple achiral building blocks, are highly desirable because such motifs are present in a wide variety of important natural products and pharmaceutical compounds. Herein, a novel one‐pot ω‐transaminase (TA)/monoamine oxidase (MAO‐N) cascade process for the synthesis of chiral 2,5‐disubstituted pyrrolidines is reported
Facile access to chiral 1-pyrrolines through Rh-catalyzed enantioselective partial hydrogenation of unprotected simple pyrroles
作者:Kui Tian、Gongyi Liu、Xiu-Qin Dong
DOI:10.1016/j.cclet.2022.04.027
日期:2022.12
Highly enantioselective Rh-catalyzed partial hydrogenation of unprotected simple 2-alkyl-5-aryl-disubstituted pyrroles has been successfully developed, generating a series of chiral 1-pyrroline derivatives generally with excellent results (95%–99% yields, 91%–96% ee). Moreover, 2,5-aryl-1H-pyrroles were hydrogenated well in high yields and good enantioselectivities. This efficient protocol features