- Synthetic method of non-steroidal antiinflammatory drug pain killing
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The invention discloses a synthesis method of non-steroidal anti-inflammatory drug tolmetin. The methodcomprises the following steps: sequentially preparing a sulfuric acid-containing acetonedicarboxylic acid crude product, 2-(2-acetoxy)-1-methyl-1H-pyrrole-3-formic acid and 2-(2-alkyl acetate)-1-methyl-1H-pyrrole-3-formic acid by taking citric acid or citric acid monohydrate as a raw material; and carrying out decarboxylation, acylation, hydrolysis and acidification to obtain tolmetin. The synthetic method provided by the invention overcomes the defect that the existing tolmetin preparation process depends on N-methylpyrrole, and is a low-cost, low-pollution and high-yield synthetic method of non-steroidal anti-inflammatory drug tolmetin.
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Paragraph 0041; 0044-0045; 0055; 0058-0059; 0068; 0071-0072
(2021/04/17)
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- COMBINATION OF CB2 LIGAND AND PARACETAMOL
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Combination of one or more CB2 modulators and paracetamol are useful of treating conditions which are mediated by the activity of CB2 receptors such as an immune disorder, an inflammatory disorder, pain, rheumatoid arthritis, multiple sclerosis, osteoarthritis, and osteoporosis.
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Page/Page column 135
(2008/12/04)
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- PYRROLOPYRIDINE DERIVATIVES
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The present invention relates to novel pyrrolopyridine derivatives, pharmaceutical compositions containing these compounds and their use in the treatment of diseases, particularly pain, which diseases are caused directly or indirectly by an increase or decrease in activity of the cannabinoid receptor.
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Page/Page column 52-53
(2008/06/13)
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