The Use of Formamidine Protection for the Derivatization of Aminobenzoic Acids
摘要:
N,N-Dimethylformamidine and novel N,N-diisopropylformamidine protecting groups were used to carry out a one-pot conversion of aminobenzoic acids into the corresponding amides. General conditions for an in situ transformation of aminobenzoic acids and their heterocyclic analogues into the corresponding formamidine-protected acid chlorides were developed. These chlorides were used in reactions with amines, including poorly reactive anilines. The protected amides were then smoothly deprotected by heating with ethylenediamine derivatives, resulting in a general procedure for the one-pot transformation of aminobenzoic acids into their amides. Our one-pot procedure was successfully applied to the preparation of several compounds of pharmaceutical interest.
TBHP as Methyl Source under Metal-Free Aerobic Conditions To Synthesize Quinazolin-4(3<i>H</i>
)-ones and Quinazolines by Oxidative Amination of C(sp<sup>3</sup>
)-H Bond
作者:Sushobhan Mukhopadhyay、Dinesh S. Barak、Sanjay Batra
DOI:10.1002/ejoc.201800495
日期:2018.6.15
tert‐Butyl hydroperoxide (TBHP) served as the methylsourceunder metal‐free aerobicconditions in the oxidativeamination of a C(sp3)–Hbond to provide quinazolin‐4(3H)‐one and quinazoline derivatives.
[EN] MODIFIED PROTEINS AND PROTEIN DEGRADERS<br/>[FR] PROTÉINES MODIFIÉES ET AGENTS DE DÉGRADATION DE PROTÉINES
申请人:CULLGEN SHANGHAI INC
公开号:WO2021239117A1
公开(公告)日:2021-12-02
Provided herein are compounds, pharmaceutical compositions, and methods for binding or degrading target proteins. Further provided herein are compounds having a DNA damage-binding protein 1 (DDB1) binding moiety. Some such embodiments include a linker. Some such embodiments include a target protein binding moiety. Further provided herein are ligand-DDB1 complexes. Further provided herein are in vivo modified DDB1 proteins.
An efficient and versatile mechanochemical route for the synthesis of chromene and isoindolo[2,1- a ]quinazoline scaffolds has been developed via a simple mortar and pestle liquid-assisted grinding method using 2,2,2-trifluoroethanol (TFE) as an efficient catalyst. The present protocol is very efficient as it offers reaction in mild reaction condition, cleaner reaction profiles, effortless work-up
通过使用2,2,2-三氟乙醇(TFE)作为简单的研钵和研杵液体辅助研磨方法,已经开发了一种用于合成色烯和异吲哚并[2,1- a ]喹唑啉支架的有效且通用的机械化学路线。 催化剂。本方案非常有效,因为它可以在温和的反应条件下提供反应,反应曲线更干净,纯化步骤轻松,纯度高,反应时间短,所需产物的收率高。
The Use of Formamidine Protection for the Derivatization of Aminobenzoic Acids
作者:Paul E. Zhichkin、Lisa H. Peterson、Catherine M. Beer、W. Martin Rennells
DOI:10.1021/jo8017186
日期:2008.11.21
N,N-Dimethylformamidine and novel N,N-diisopropylformamidine protecting groups were used to carry out a one-pot conversion of aminobenzoic acids into the corresponding amides. General conditions for an in situ transformation of aminobenzoic acids and their heterocyclic analogues into the corresponding formamidine-protected acid chlorides were developed. These chlorides were used in reactions with amines, including poorly reactive anilines. The protected amides were then smoothly deprotected by heating with ethylenediamine derivatives, resulting in a general procedure for the one-pot transformation of aminobenzoic acids into their amides. Our one-pot procedure was successfully applied to the preparation of several compounds of pharmaceutical interest.