Des radicaux α-acylamino peuvent etregeneres par traitement de 衍生 de phenylthio-2-, phenylseleno-2 oumethylthio-2 butene-3'yl-1 pyrrolidones-2 par l'hydrure de tributyl-Sn en Ces radicaux subissent des反应分子内反应donner des indolizidinones et des pyrrolizidinones
Stereoselective Synthesis of Amido and Phenyl Azabicyclic Derivatives via a Tandem Aza Prins-Ritter/Friedel–Crafts Type Reaction of Endocyclic <i>N</i>-Acyliminium Ions
作者:Kiran Indukuri、R. Unnava、Manash J. Deka、Anil K. Saikia
DOI:10.1021/jo401450j
日期:2013.11.1
A simple protocol is described for the synthesis of amido and phenyl hexahydroindolizin-3(2H)-one, hexahydro-1H-quinolizin-4(6H)-one, and 1,3,4,10b-tetrahydropyrido[2,1-a]isoindol-6(2H)-one derivatives via endo-trig (aza-Prins type) cyclization followed by an intermolecular Ritter/Friedel–Crafts reaction of cyclic N-acyliminium ions, which are derived from the boron trifluoride etherate treatment of
Stereoselective synthesis of O-tosyl azabicyclic derivatives via aza Prins reaction of endocyclic N-acyliminium ions: application to the total synthesis of (±)-epi-indolizidine 167B and 209D
作者:Anil K. Saikia、Kiran Indukuri、Jagadish Das
DOI:10.1039/c4ob01130a
日期:——
A diastereoselective protocol has been established for the synthesis of 4-O-tosyl piperidine containing hexahydroindolizin-3(2H)-one, hexahydro-1H-quinolizin-4(6H)-one and 1,3,4,10b-tetrahydropyrido[2,1-a]isoindol-6(2H)-one derivatives via the aza-Prinscyclization reaction of cyclic N-acyliminium ions mediated by p-toluene sulphonic acid (p-TSA) under mild conditions. The reaction is highly diastereoselective
Synthesis of Azabicycles via Cascade Aza-Prins Reactions: Accessing the Indolizidine and Quinolizidine Cores
作者:Freda K. I. Chio、Sébastien J. J. Guesné、Lorraine Hassall、Thomas McGuire、Adrian P. Dobbs
DOI:10.1021/acs.joc.5b01301
日期:2015.10.16
studies of intramolecular aza-Prins and aza-silyl-Prins reactions, starting from acyclic materials, are reported. The methods allow rapid and flexible access toward an array of [6,5] and [6,6] aza-bicycles, which form the core skeletons of various alkaloids. On the basis of our findings on the aza-Prins and aza-silyl-Prins cyclizations, herein we present simple protocols for the intramolecular preparation
Synthesis of 5-Substituted 2-Pyrrolidinones by Coupling of Organozinc Reagents with Cyclic N-Acyliminium Ions
作者:Ivann Zaragoza-Galicia、Zaira A. Santos-Sánchez、Yazmín I. Hidalgo-Mercado、Horacio F. Olivo、Moisés Romero-Ortega
DOI:10.1055/s-0037-1610733
日期:2019.12
coupling reaction between cyclic N-acyliminium ions with organozinc reagents is described. The cyclic N-acyliminium ions, generated in situ from N-substituted-5-hydroxy-2-pyrrolidinones by treatment with boron trifluoride–diethyl ether complex or titanium tetrachloride, are trapped by the organozinc reagent, which is formed from an alkyl bromide in the presence of zinc in the same reaction medium. The
申请人:Chai Tai Tianqing Pharmaceutical Group Co., Ltd.
公开号:EP3418282A1
公开(公告)日:2018-12-26
Provided are compounds of formula I and formula II or pharmaceutically acceptable salts of the compounds and pharmaceutical compositions thereof. The compounds of formula I and formula II or the pharmaceutically acceptable salts of the compounds provide indole 2,3-dioxygenase (IDO) inhibitory activity and are capable of treating IDO-mediated immunosuppressive diseases, such as infectious diseases or cancer.
本文提供了式 I 和式 II 的化合物或其药学上可接受的盐及其药物组合物。式 I 和式 II 的化合物或其药学上可接受的盐具有吲哚-2,3-二氧合酶(IDO)抑制活性,能够治疗 IDO 介导的免疫抑制疾病,如传染性疾病或癌症。