A general, sustainable dearomatization reaction for nitrogen‐containing heterocycles was developed. Under solventfree conditions and without catalyst, the biorenewable methyl coumalate (MC) reacted as an efficient C3 partner to convert nine types of basic aromatic rings into their pyrido[1,2‐a] fused derivatives in good to excellent yields. The fluorescence properties of some of the products were
Direct Asymmetric Dearomatization of Pyridines and Pyrazines by Iridium-Catalyzed Allylic Amination Reactions
作者:Ze-Peng Yang、Qing-Feng Wu、Shu-Li You
DOI:10.1002/anie.201404286
日期:2014.7.1
first iridium‐catalyzed intramolecular asymmetric allylic dearomatization reaction of pyridines and pyrazines has been realized. 2,3‐Dihydroindolizine and 6,7‐dihydropyrrolo[1,2‐a]pyrazine derivatives were obtained with excellent yields and enantioselectivity. This methodology features dearomatization by direct N‐allylic alkylation of pyridines or pyrazines under mild reaction conditions.
Co-Catalyzed Transannulation of Pyridotriazoles with Isothiocyanates and Xanthate Esters
作者:Ziyan Zhang、Vladimir Gevorgyan
DOI:10.1021/acs.orglett.0c03099
日期:2020.11.6
developed. This method features conversion of pyridotriazoles into two N-fused heterocyclic aromatic systems—imino-thiazolopyridines and oxo-thiazolopyridine derivatives—via one-step Co(II)-catalyzed transannulation reaction proceeding via a radical mechanism. The synthetic usefulness of the developed method was illustrated in the synthesis of amino acid derivatives and further transformations of obtained
Rh(<scp>ii</scp>)-catalyzed synthesis of 5<i>H</i>-isochromeno[3,4-<i>b</i>]indolizines from 4-diazoisochroman-3-imines and pyridines
作者:Yingxiao Wang、Jianwei Xie、Ping Lu、Yanguang Wang
DOI:10.1039/d2ob01400a
日期:——
A Rh(II)-catalyzed (3 + 2) annulation of pyridines with 4-diazoisochroman-3-imines leading to 5H-isochromeno[3,4-b]indolizines is presented. This methodology provides straightforward access to a wide variety of substituted 5H-isochromeno[3,4-b]indolizines with moderate to good yields (up to 84%) and complete regioselectivity.
提出了 Rh( II ) 催化的 (3 + 2) 吡啶与 4-diazoisochroman-3-imines 的环化反应,生成 5 H -isochromeno[3,4- b ]indolizines。这种方法可以直接获得各种取代的 5 H -异铬烯基 [3,4- b ] 吲哚,具有中等至良好的收率(高达 84%)和完全的区域选择性。
FUSED HETEROCYCLIC DERIVATIVE, PREPARATION METHOD THEREFOR AND MEDICAL USE THEREOF
申请人:Beijing InnoCare Pharma Tech Co., Ltd.
公开号:EP3505517A1
公开(公告)日:2019-07-03
The present invention relates to fused heterocyclic derivatives, processes for their preparation and their use in medicine. Specifically, the present invention relates to a novel derivative represented by the formula (I'), or its pharmaceutically acceptable salt thereof, a pharmaceutical composition containing the derivative or its pharmaceutically acceptable salt thereof, and the method for preparing the derivative and its pharmaceutically acceptable salt thereof. The present invention also relates to the use of the derivative and its pharmaceutically acceptable salt thereof, or a pharmaceutical composition containing the derivative and its pharmaceutically acceptable salt thereof in the preparation of medicines, in particularly as IDO inhibitor medicines, for treating and/or preventing cancers. Wherein each substituent of the formula (I') is the same as defined in the specification.