- 5-aminothiazole non-steroidal anti-inflammatory compound as well as preparation method and application thereof
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The invention discloses a 5-aminothiazole non-steroidal anti-inflammatory compound. The compound which is efficient, low in toxicity and small in side effect is prepared from an ester intermediate containing a thiazine ring and a 5-aminothiazole derivative through a transesterification reaction. The preparation method of the compound is simple, the compound has the active groups of the existing non-steroidal anti-inflammatory medicine; meanwhile, the special change of the nitrogen atom position is also designed; compared with the existing non-steroidal anti-inflammatory medicines, the compoundhas better anti-inflammatory and analgesic effects, particularly has good curative effects on arthritis, osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, soft tissue inflammation and thelike, has small toxic and side effects on human bodies, and has a very wide market prospect.
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Paragraph 0106; 0146-0148
(2020/09/20)
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- Preparation method of tenoxicam
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The invention discloses a preparation method of tenoxicam and belongs to the technical field of medicine preparation. The preparation method comprises the following steps: using 3-chlorosulfonyl-2-thiophenecarboxylate, namely TNXK-0 as a raw material to synthesize 3-((N-(methoxycarbonyl) methyl) sulfonyl)-2-thiophenecarboxylate, namely TNXK-1; using the TNXK-1 as a raw material to synthesize 4-hydroxy-2H-thieno (2,3e)-1,2-thiazine-3-methyl formate-1,1-dioxide, namely TNXK-2; using the TNXK-2 as a raw material to synthesize 4-hydroxy-2-methyl-2H-thieno (2,3e)-1,2-thiazine-3-methyl formate-1,1-dioxide, namely TNXK-3; using the TNXK-3 and 2-aminopyridine as raw materials to synthesize the tenoxicam. The preparation method of the tenoxicam, disclosed by the invention, has the advantages of simple process, high yield and low cost; the purity of an obtained product is high.
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Paragraph 0041-0045; 0063; 0067; 0073; 0077; 0083; 0087
(2017/10/26)
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- Analogues and Derivatives of Tenoxicam. 1. Synthesis and Antiinflammatory Activity of Analogues with Different Residues on the Ring Nitrogen and the Amide Nitrogen
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The synthesis of tenoxicam, 4-hydroxy-2-methyl-N-2-pyridyl-2H-thieno-1,2-thiazine-3-carboxamide 1,1-dioxide (1e), and of the analogues with various residues on the ring nitrogen and the amide nitrogen is described.This new class of "oxicams" has pronounced antiinflammatory and analgesic properties.The very specific structure-activity relationship of isomeric and isosteric groups at the amide nitrogen has been evaluated.The substituent in position 2 also has a great influence on the pharmacological properties.Tenoxicam is presently underrgoing clinical trials.
- Binder, Dieter,Hromatka, Otto,Geissler, Franz,Schmied, Karl,Noe, Christian R.,et al.
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p. 678 - 682
(2007/10/02)
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