Selective Construction of C−C and C=C Bonds by Manganese Catalyzed Coupling of Alcohols with Phosphorus Ylides
作者:Xin Liu、Thomas Werner
DOI:10.1002/adsc.202001209
日期:2021.2.16
manganese catalyzed coupling of alcohols with phosphorus ylides. The selectivity in the coupling of primary alcohols with phosphorus ylides to form carbon‐carbon single (C−C) and carbon‐carbon double (C=C) bonds can be controlled by the ligands. In the conversion of more challenging secondary alcohols with phosphorus ylides the selectivity towards the formation of C−C vs. C=C bonds can be controlled by the
A purpose of the present invention is to provide TNF-&agr; production inhibitors being useful as therapeutic agents for autoimmune diseases such as rheumatoid arthritis. Novel compounds having the structure represented by the general formula [1] or salts thereof according to the present invention have excellent TNF-&agr; production inhibitory activities,
1
wherein “A” is —(NR
4
)—, —(CR
5
R
6
)— or —O—, “B” is alkylene or alkenylene, R
1
, R
2
, R
4
, R
5
and R
6
are hydrogen, alkyl, alkenyl, adamantyl or the like, R
3
is aryl or an unsaturated heterocycle, and “X” is oxygen or sulfer respectively.
An efficient enantioselective [3+2] cycloaddition of isomünchnones with methyleneindolinones that are generated by an in situ intramolecular addition of the carbonyl group to rhodium carbenes is realized with a chiral N,N′-dioxide/Zn(II) complex as a Lewis acid. A series of chiral oxa-bridged 3-spiropiperidines are obtained in high yields with excellent dr and excellent ee values.
使用手性N , N '-二氧化物/Zn( II ) 络合物作为路易斯酸,通过将羰基原位分子内加成到卡宾铑上,实现了异明酮与亚甲基吲哚酮的有效对映选择性 [3+2] 环加成反应. 以高产率获得了一系列手性氧杂桥联的 3-螺哌啶,具有优异的 dr 和优异的 ee 值。
Substituted Pyrrolidines and Methods of Use
申请人:AbbVie S.à.r.l.
公开号:US20180099931A1
公开(公告)日:2018-04-12
The invention discloses compounds of Formula (I)
wherein R
1
, R
2
, R
2A
, R
3
, R
3A
, R
4
, R
4A
, and R
5
are as defined herein. The present invention relates to compounds and their use in the treatment of cystic fibrosis, methods for their production, pharmaceutical compositions comprising the same, and methods of treating cystic fibrosis by administering a compound of the invention.
highly functionalized chiral P-ylides can be easily synthesized through a copper-catalyzed asymmetric propargylic alkylation reaction from phosphonium salts and racemic propargylic esters. The subsequent Wittig reactions enable the synthesis of versatile alkene building blocks, chiral α-propargylic acrylates, and α-propargylic allenoates, with a wide substrate scope and satisfactory functional group