Nachbargruppenbeteiligung bei der Bildung von kondensierten Azinen. Über die Darstellung von Derivaten von Pyrazolo(3,4-b)pyrazin, Isoxazolo(4,5-b)pyrazin und Isothiazolo(5,4-b)pyridin. (Heterocyclen, 210. Mitt.)
[EN] TETRAZINES FOR HIGH CLICK RELEASE SPEED AND YIELD<br/>[FR] TÉTRAZINES POUR UNE VITESSE ET UN RENDEMENT DE LIBÉRATION DE CHIMIE CLIC ÉLEVÉS
申请人:TAGWORKS PHARMACEUTICALS B V
公开号:WO2020256544A1
公开(公告)日:2020-12-24
Disclosed herein are tetrazines substituted with groups that result in a high click conjugation yield and high click release yields. In some of several other aspects, the invention relates to combinations and kits comprising said tetrazines and a dienophile, preferably a trans-cyclooctene. In another aspect, the compounds, combinations, and kits are for use as a medicament.
Pyrazine derivatives or salts thereof, pharmaceutical composition containing the same, and production intermediates thereof
申请人:Toyama Chemical Co., Ltd.
公开号:US06800629B2
公开(公告)日:2004-10-05
Pyrazine derivatives represented by general formula [1]:
wherein the variables are as defined in the specification, or salts thereof have an excellent antiviral activity and are useful as a therapeutic agent for treating viral infections. Further, fluoropyrazine-carboxamide derivatives represented by general formula [2]:
wherein the variables are as defined in the specification, or salts thereof are useful as an intermediate for production of the compounds of general formula [1], and as an intermediate for production of the fluoropyrazine-carboxamide derivatives of which one typical example is 6-fluoro-3-hyroxy-2-pyrazine-carboxamide having an antiviral activity.
Preparation of Azinones from (Cyclopropylmethoxy)azine Ethers
作者:Allyn T. Londregan、John M. Curto、Emma Hastry、Colin R. Rose、Simon Berritt
DOI:10.1021/acs.joc.3c00145
日期:2023.5.5
A general and convenient procedure for the synthesis of azinones is presented. Cyclopropylmethanol is readily introduced onto various azines where it functions as both a protecting group and surrogate for hydroxyl. After acidic deprotection, under mild reaction conditions, the corresponding azinones are formed and isolated in excellent yields. >20 examples are included along with a discussion of reaction