Coupling reactions, suitable for use in organic or aqueous media, are performed by contacting a 1,2,4,5-tetrazine with a dienophile. The dienophile may be covalently bonded to a protein, and the coupling reaction may be performed in biological media such as those containing cells or cell lysates. The reactions may be performed in the presence of primary amines, thiols, acetylenes, azides, phosphines, and products of Staudinger and/or Sharpless-Huisgen reactions Novel 3-substituted cyclopropene compounds and trans-cyclooctenes are exemplary dienophiles for these reactions.
                            适用于有机或
水介质的偶联反应,通过将1,2,4,5-
四唑与二烯
酰亚胺接触来进行。二烯
酰亚胺可以共价结合到蛋白质上,并且偶联反应可以在含有细胞或细胞裂解物的
生物介质中进行。在主要胺,
硫醇,
乙炔,偶
氮化物,膦和Staudinger和/或Sharpless-Huisgen反应产物的存在下进行反应。新型的3-取代环
丙烯化合物和反-环
辛烯是这些反应的示例二烯
酰亚胺。