본 발명은 유기 키랄 촉매 화합물을 이용한 키랄 감마 락탐 유도체 또는 이의 약학적으로 허용가능한 염의 제조방법 및 상기 유도체 또는 이의 약학적으로 허용가능한 염을 포함하는 근육질환, 정신질환, 또는 퇴행성 신경질환의 예방, 개선, 또는 치료용 조성물에 관한 것이다. 본 발명의 키랄 감마 락탐 유도체 또는 이의 약학적으로 허용가능한 염은 MAO-B, MSTN 억제 효능을 가지고 D1-mClu5를 타겟으로 하며, 근감소증을 비롯한 근육질환, 우울증을 비롯한 정신질환, 파킨슨병을 비롯한 퇴행성 신경질환 등의 예방, 개선, 또는 치료에 활용될 수 있다.
Primary Amine, Thiourea-Based Dual Catalysis Motif for Synthesis of Stereogenic, All-Carbon Quaternary Center-Containing Cycloalkanones
摘要:
The enantioselective synthesis of alpha,alpha-disubstituted cycloalkanones has been developed using a primary amine, thiourea-based dual catalysis pathway. A range of electrophiles and ring sizes are tolerated under the reaction conditions. A possible catalytic cycle is presented to explain the reactivity.
[EN] ENANTIONSELECTIVE PROCESSES TO INSECTICIDAL 3-ARYL-3-TRIFLUOROMETHYL-SUBSTITUTED PYRROLIDINES<br/>[FR] PROCÉDÉS ÉNANTIOSÉLECTIFS POUR DES INSECTICIDES DE PYRROLIDINES 3-ARYL-3-TRIFLUOROMÉTHYL-SUBSTITUÉES
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2013050301A1
公开(公告)日:2013-04-11
The present invention relates to processes for the enantio-selective preparation of spyrrolidine derivatives useful in the manufacture of pesticidally active compounds, as well as to intermedates in the processes. The processes include those comprising (a-i) reacting a compound of formula (Ia), formula (Ia), wherein P is alkyl, aryl or heteroaryl, each optionally substituted, wherein the heteroaryl is connected at P via a ring carbon atom; R1 is chlorodifluoromethyl or trifluoromethyl; R2 is aryl or heteroaryl, each optionally substituted; with a source of cyanide in the presence a chiral catalyst to give a compound of formula IIa, formula (IIa), wherein P, R1 and R2 are as defined for the compound of formula (Ia); and (a-ii) oxidising the compound of formula IIa with a peroxy acid, or peroxide in the presence of an acid to give a compound of formula (VI), formula (VI), wherein R1 and R2 are as defined for the compound of formula (Ia).
A highly efficient asymmetric Michael addition of α,α-disubstituted aldehydes to maleimides catalyzed by primary amine thiourea salt
作者:Feng Yu、Zhichao Jin、Huicai Huang、Tingting Ye、Xinmiao Liang、Jinxing Ye
DOI:10.1039/c0ob00154f
日期:——
The first highlyefficientMichaeladdition of challenging α,α-disubstituted aldehydes to maleimides catalyzed by a simple bifunctional primary amine thiourea catalyst/benzoic acid system has been successfully developed to generate quaternary carbon centers in high yields (up to 99%) with excellent enantioselectivities (91–99%).
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 series of secondaryamine-thioureacatalysts 1a-1d derived from L-proline and chiral diamine were prepared and successfully applied to the Michael addition of acetone to trans-nitroalkenes in excellent yields (up to 99%) and enantioselectivities (44-91% ee).