4H-3,1-Benzothiazin-4-ones are accessible by various preparative routes mostly starting from anthranilic acid derivatives. These facile synthetic entries allow for the introduction of diverse substituents at positions 2 and 5–8. In this review, representative methods to generate 4H-3,1-benzothiazin-4-ones and the biological activities of the resulting products are highlighted.

中文翻译：

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4 H -3,1-Benzothiazin-4-Ones的合成及生物活性

4 H -3,1-Benzothiazin-4-ones可以通过各种制备途径获得，这些途径主要从邻氨基苯甲酸衍生物开始。这些方便的合成物允许在位置2和5-8引入不同的取代基。在这篇综述中，着重介绍了生成4 H -3,1-苯并噻嗪-4-酮的代表性方法以及所得产物的生物活性。