Enantioselective Radical Cyclization for Construction of 5-Membered Ring Structures by Metalloradical C–H Alkylation
作者:Yong Wang、Xin Wen、Xin Cui、X. Peter Zhang
DOI:10.1021/jacs.8b01662
日期:2018.4.11
use of unsaturated substrates. Guided by the concept of metalloradicalcatalysis, a different mode of radical cyclization that can employ saturated C-H substrates is demonstrated through the development of a Co(II)-based system for catalytic activation of aliphatic diazo compounds for enantioselective radical alkylation of various C(sp3)-H bonds. It allows for efficient construction of chiral pyrrolidines
自由基环化代表了构建环状结构的强大策略。传统的自由基环化以自由基加成为关键步骤,需要使用不饱和底物。在金属自由基催化概念的指导下,通过开发基于Co(II)的系统,展示了一种可以使用饱和CH底物的不同自由基环化模式,该系统用于催化活化脂肪族重氮化合物,以实现各种C(sp3)的对映选择性自由基烷基化)-H键。它可以有效构建手性吡咯烷和其他有价值的五元环状化合物。这种自由基环化的替代策略提供了一种新的逆合成范例,通过 CH 和 C=O 元素的结合形成 CC 键,从容易获得的开链醛制备五元环状分子。
[EN] 3-[1,4]OXAZEPANE-4-PYRIMIDONE DERIVATIVES<br/>[FR] DÉRIVÉS DE 3-[1,4] OXAZÉPANE-4-PYRIMIDONE
申请人:MITSUBISHI TANABE PHARMA CORP
公开号:WO2010114179A1
公开(公告)日:2010-10-07
A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof: wherein Z represents nitrogen atom, C-F or the like; R1 represents a C1-C3 alkyl group; Y represents oxygen atom or N-R7; R2, R3, R4, R5, R6 and R7 each independently represents hydrogen atom, a C1-C6 alkyl group, or a group represented by the formula (II): which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as a neurodegenerative diseases (e.g. Alzheimer disease).
A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof:
wherein Z represents nitrogen atom, C—F or the like; R
1
represents a C
1
-C
3
alkyl group; Y represents oxygen atom or N—R
7
; R
2
, R
3
, R
4
, R
5
, R
6
and R
7
each independently represents hydrogen atom, a C
1
-C
6
alkyl group, or a group represented by the formula (II):
which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as a neurodegenerative diseases (e.g. Alzheimer disease).
A compound represented by the formula (I) or a pharmaceutically acceptable salt thereof:
wherein Z represents nitrogen atom, C—F or the like; R1 represents a C1-C3 alkyl group;
Y represents oxygen atom or N—R7; R2, R3, R4, R5, R6 and R7 each independently represents hydrogen atom, a C1-C6 alkyl group, or a group represented by the formula (II):
which is used for preventive and/or therapeutic treatment of a disease caused by tau protein kinase 1 hyperactivity such as a neurodegenerative diseases (e.g. Alzheimer disease).