采用底物和催化剂控制的合成策略构建两种不同类型的稠合多环杂环,即吡啶并[2,3,4- de ]喹唑啉酮和吲哚[1,2- c ]喹唑啉酮。该方法最显着的优点是能够通过简单的 CH 激活和随后的环化级联途径快速生成两种不同的多环支架。具体而言,亚砜叶立德在这两种转化中都发挥了至关重要的作用,作为双碳合成子和一碳合成子,分别通过[4+2]和[4+1]环化途径独立构建两个稠合多环支架。
Process for the production of 2,6-diaminobenzonitrile derivatives
申请人:American Home Products Corporation
公开号:US04504660A1
公开(公告)日:1985-03-12
2,6-Diaminobenzonitriles, useful in the production of N-(2-cyano-3-substituted or unsubstituted amino-phenyl)oxamate and N-(2-cyano-3-substituted or unsubstituted amino-phenyl)tetrazole-5-carboxamide antiallergy and antisecretory agents, are prepared by sequential displacement of the fluoro substituents from 2,6-difluorobenzonitrile with the appropriately substituted amine.
The present invention relates to a series of pyrimidine compounds of Formula I which inhibit HIV integrase and to pharmaceutical compositions and methods of treatment for AIDS or ARC using these compounds.
1
THIAZOLIDINE DERIVATIVES AND MEDICINAL USE THEREOF
申请人:SAKASHITA Hiroshi
公开号:US20070259880A1
公开(公告)日:2007-11-08
A thiazolidine derivative represented by the formula (I)
wherein each symbol is as defined in the specification, and a pharmaceutically acceptable salt thereof exhibit a potent DPP-IV inhibitory activity, and can be provided as an agent for the prophylaxis or treatment of diabetes, an agent for the prophylaxis or treatment of obesity and the like.
作者:Xin Wang、Sa Guo、Yan Zhang、Zhiguo Zhang、Guisheng Zhang、Yong Ye、Kai Sun
DOI:10.1002/adsc.202100208
日期:2021.7
AbstractAn organoselenium‐enabled radical relay Azidation‐carbocyclization reaction for the preparation of azide‐substituted quinoline‐2,4‐diones was developed. A series of previously unknown structurally diverse azide‐ substituted quinoline‐2,4‐diones were obtained under metal‐free and room‐temperature conditions. The key features of this reaction are a broad substrate scope, amenability to gram‐scale synthesis, and easy product derivatization. Preliminary mechanistic studies support participation of an organoselenium species in a radical relay pathway.magnified image