2-(dimethylamino)-4H-benzo[d][1,3]thiazin-4-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻嗪类
• 英文名称: 2-(dimethylamino)-4H-benzo[d][1,3]thiazin-4-one
• 英文别名: 2-dimethylamino-4H-3,1-benzothiazin-4-one；2-(Dimethylamino)-3,1-benzothiazin-4-one
• 化学式: C₁₀H₁₀N₂OS
• 分子量: 206.268
• InChiKey: MNLWKDCGEIKJEI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  58
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  3-(2-Cyano-phenyl)-1,1-dimethyl-thiourea 在 盐酸 、 碳酸氢钠 作用下， 生成 2-(dimethylamino)-4H-benzo[d][1,3]thiazin-4-one
  参考文献：
  名称：

  3,1-Benzothiazin-4-ones and 3,1-Benzoxazin-4-ones: Highly Different Activities in Chymotrypsin Inactivation

  摘要：

  3,1-Benzothiazin-4-ones are suIfur analogs of the potent serine protease inactivators of the 3, l-benzoxazin-4-one type, which acylate the serine residue within the active site of the enzymes. A series of 2-amino-3,1-benzothiazinones was synthesized, but these compounds showed only very little inhibitory activity toward chymotrypsin, a model serine protease. Detailed investigations revealed that benzothiazinones and benzoxazinones react with identical mechanisms, but benzothiazinones acylate chymotrypsin with much lower rate constants. Investigations of nonenzymatic hydrolysis showed the benzothiazinones to be intrinsically more stable than benzoxazinones. It was concluded from spectroscopic results, that benzoxazinones are highly activated due to the absence of ester-like resonance. 2-Benzoylamino-4H-3,1-benzoxazin-4-one was found to be a new, highly active chymotrypsin inactivator. In contrast, benzothiazinones were found to be resonance stabilized. The contribution of a resonance structure with an exocyclic oxanion to the overall structure of the benzothiazinones and its nonproductive binding to the active site explained their low reactivity toward chymotrypsin. (C) 1995 Academic Press, Inc.

  DOI：

  10.1006/bioo.1995.1006

文献信息

• Decarboxylation of isatoic anhydrides with disulfides: an efficient and general synthesis of S-aryl 2-aminobenzothioate derivatives
  作者：Miaochang Liu、Shaomiao Lin、Jinchang Ding、Wenxia Gao、Huayue Wu、Jiuxi Chen

  DOI：10.1016/j.tet.2013.01.024

  日期：2013.3

  The decarboxylation of isatoic anhydrides with disulfides was realized in the presence of sodium dithionite, leading to S-aryl 2-aminobenzothioate derivatives in moderate to excellent yields. Furthermore, the decarboxylation of diphenyldiselenide with isatoic anhydrides was also examined. It was noted that unexpected 2-(dimethylamino)-4H-benzo[d][1,3]thiazin-4-one was obtained using tetramethylthiuram

  在连二亚硫酸钠的存在下，用二硫化物实现了ISA酸酐与二硫化物的脱羧反应，从而以中等至极好的收率得到了S-芳基2-氨基苯甲硫酸酯衍生物。此外，还研究了二苯二硒化物与isatoic酸酐的脱羧作用。注意到使用四甲基秋兰姆二硫化物作为硫源获得了出人意料的2-（二甲氨基）-4 H-苯并[ d ] [1,3]噻嗪-4-酮。
• 3,1-Benzothiazin-4-ones and 3,1-Benzoxazin-4-ones: Highly Different Activities in Chymotrypsin Inactivation
  作者：U. Neumann、M. Gutschow

  DOI：10.1006/bioo.1995.1006

  日期：1995.3

  3,1-Benzothiazin-4-ones are suIfur analogs of the potent serine protease inactivators of the 3, l-benzoxazin-4-one type, which acylate the serine residue within the active site of the enzymes. A series of 2-amino-3,1-benzothiazinones was synthesized, but these compounds showed only very little inhibitory activity toward chymotrypsin, a model serine protease. Detailed investigations revealed that benzothiazinones and benzoxazinones react with identical mechanisms, but benzothiazinones acylate chymotrypsin with much lower rate constants. Investigations of nonenzymatic hydrolysis showed the benzothiazinones to be intrinsically more stable than benzoxazinones. It was concluded from spectroscopic results, that benzoxazinones are highly activated due to the absence of ester-like resonance. 2-Benzoylamino-4H-3,1-benzoxazin-4-one was found to be a new, highly active chymotrypsin inactivator. In contrast, benzothiazinones were found to be resonance stabilized. The contribution of a resonance structure with an exocyclic oxanion to the overall structure of the benzothiazinones and its nonproductive binding to the active site explained their low reactivity toward chymotrypsin. (C) 1995 Academic Press, Inc.