Asymmetric synthesis of (+)- and (−)-7-(3-pyridyl)-1-azabicyclo[2.2.1]heptane as conformationally restricted analogues of nicotine
摘要:
Both enantiomers of the conformationally restricted nicotine analogue 7-(3-pyridyl)-1-azabicyclo[2.2.1]heptane were prepared in a convenient, asymmetric synthetic route. (C) 2002 Elsevier Science Ltd. All rights reserved.
Provided is a kynurenine production inhibitor comprising a nitrogen-containing heterocyclic compound represented by formula (I):
(wherein R
50
and R
51
may be the same or different and each represent a hydrogen atom or the like, G
1
and G
2
may be the same or different and each represent a nitrogen atom or the like, X represents formula (III):
(wherein m
1
and m
2
may be the same or different and each represent an integer of 0 or 1, Y represents an oxygen atom or the like, and R
6
and R
7
may be the same or different and each represent a hydrogen atom or the like),
R
1
represents optionally substituted lower alkyl or the like, R
2
represents a hydrogen atom or the like, and R
3
represents optionally substituted lower alkyl or the like), and the like.
Mesoionic Carbene‐Catalyzed Formyl Alkylation of Aldehydes
作者:Chang Liu、Zengyu Zhang、Liang‐Liang Zhao、Guy Bertrand、Xiaoyu Yan
DOI:10.1002/anie.202303478
日期:2023.6.12
A metal-free protocol for the coupling reaction of aldehydes and alkyl halides was successfully developed with mesoionic carbenes (MICs) as catalysts. This versatile strategy delivers a large diversity of simple ketones as well as bio-active molecules by late-stage functionalization.
[EN] SUBSTITUTED QUINOXALINE DERIVATIVES<br/>[FR] DÉRIVÉS DE QUINOXALINE SUBSTITUÉS
申请人:SELVITA S A
公开号:WO2016180536A1
公开(公告)日:2016-11-17
The present invention relates to substituted quinoxaline derivatives. These compounds are useful for the prevention and/or treatment of several medical conditions including hyperproliferative disorders and diseases.