[EN] CONCISE PROCESS FOR PREPARING 3-PYRROLIDINE CARBOXYLIC ACID DERIVATIVES<br/>[FR] PROCÉDÉ CONCIS POUR LA PRÉPARATION DE DÉRIVÉS D'ACIDE 3-PYRROLIDINE CARBOXYLIQUE
申请人:OKINAWA INST SCIENCE & TECH SCHOOL CORP
公开号:WO2018025295A1
公开(公告)日:2018-02-08
The present invention relates to a process for preparing 3-pyrrolidine carboxylic acid derivatives, and particularly a simple process for preparing 5-substituted 3-pyrrolidine carboxylic acid derivatives. In addition, the present invention relates to a novel pyrrolidine carboxylic acid derivative, its manufacture, pharmaceutical compositions containing it and its use as a catalyst.
PROCESS FOR THE PREPARATION OF DIHYDROPYRROLE DERIVATIVES
申请人:Syngenta Participations AG
公开号:US20160073631A1
公开(公告)日:2016-03-17
The present invention provides stereoselective processes for the preparation of compounds of formula (I)
wherein
P is phenyl, naphthyl, a 6-membered heteroaryl group containing one or two nitrogen atoms as ring members, or a 10-membered bicyclic heteroaryl group containing one or two nitrogen atoms as ring members, and wherein the phenyl, naphthyl and heteroaryl groups are optionally substituted;
R
1
is chlorodifluoromethyl or trifluoromethyl;
R
2
is optionally substituted aryl or optionally substituted heteroaryl;
n is 0 or 1;
including the process comprising
(a-i) reacting a compound of formula II
wherein P, R
1
and R
2
are as defined for the compound of formula I;
with nitromethane in the presence a chiral catalyst to give a compound of formula III
wherein P, R
1
and R
2
are as defined for the compound of formula I; and
(a-ii) reductively cyclising the compound of formula III to give the compound of formula I.
The invention also provides intermediates useful for processes for the synthesis of compounds of formula (I).
Effective construction of quaternary stereocenters by highly enantioselective α-amination of branched aldehydes
作者:Ji-Ya Fu、Xiao-Ying Xu、Yan-Chun Li、Qing-Chun Huang、Li-Xin Wang
DOI:10.1039/c0ob00406e
日期:——
A highly efficient enantioselectiveα-amination of branchedaldehydes with azadicarboxylates promoted by chiral proline-derived amide thiourea bifunctional catalysts was developed for the first time, affording the adducts bearing quaternary stereogenic centers with excellent yields (up to 99%) and enantioselectivities (up to 97% ee).
A (S)-pyrrolidine sulfonamidecatalyzed asymmetric direct aldol reaction of aryl methyl ketones with aromatic aldehydes has been developed with moderate to good enantioselectivities. The study considerably broadens the substrate scope of chiral amines promoted aldol processes.
[EN] NOVEL SPIROOXINDOLE DERIVATIVE AND PROCESS FOR PRODUCING THE SAME<br/>[FR] NOUVEAU DÉRIVÉ DE SPIROOXINDOLE ET PROCÉDÉ POUR LA PRODUCTION DE CELUI-CI
申请人:OKINAWA INST OF SCIENCE AND TECHNOLOGY SCHOOL CORP
公开号:WO2014058035A1
公开(公告)日:2014-04-17
Disclosed is a compound of formula I: wherein Rソ1?, Rソ2?, Rソ3?, Rソ4?, Rソ5?, n and m are defined herein. The compound of formula I is prepared by a concise, catalytic enantioselective formal hetero-Diels-Alder (hDA) reactions of enones with isatins and is useful for making pharmaceutical composition for the treatment of proliferative diseases.