596817-06-0Relevant articles and documents
PYRROLIDINE AND PIPERIDINE COMPOUNDS
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Paragraph 0250-0253, (2021/05/15)
The present technology provides pyrrolidine and piperidine compounds or pharmaceutically acceptable salts thereof, preparation processes thereof, pharmaceutical compositions comprising the same, and uses thereof. In particular, said compounds may be usefully applied in the treatment and prevention of FAP-mediated diseases.
4-fluoropyrrolidine-2-carbonyl fluorides: Useful synthons and their facile preparation with 4-tert-butyl-2,6-dimethylphenylsulfur trifluoride
Singh, Rajendra P.,Umemoto, Teruo
, p. 3113 - 3121 (2011/06/21)
4-Fluoropyrrolidine derivatives are useful in medicinal chemistry applications such as dipeptidyl peptidase IV inhibitors. As attractive synthons for these, N-protected (2S,4S)-4-fluoropyrrolidine-2-carbonyl fluorides were synthesized in high yield by double fluorination of N-protected (2S,4R)-4-hydroxyproline with 4-tert-butyl-2,6-dimethylphenylsulfur trifluoride (Fluolead). The 4-fluoropyrrolidine-2-carbonyl fluorides were converted to useful intermediates such as 4-fluoropyrrolidine-2-carboxamides, -N-methoxy-N-methylcarboxamide (Weinreb amide), -carboxylate methyl esters, and -carbonitriles in excellent yields. The crystalline N-Fmoc-cis-4- fluoropyrrolidine-2-carbonyl fluoride 2a is a particularly useful synthon due to its high yield of preparation and easy isolation as an enantiomerically pure compound by crystallization. Thus, the methodology using the synthons prepared by the stereospecific double fluorination has enabled a significant decrease in the synthetic steps needed for the preparation of the 4-fluoropyrrolidine derivatives useful for medicinal applications.
DIPEPTIDYL PEPTIDASE IV INHIBITORS
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Page/Page column 42, (2010/08/04)
Described are novel compounds of the Formula (I), their derivatives, analogs, tautomeric forms, regioisomers, stereoisomers, polymorphs, solvates, intermediates, pharmaceutically acceptable salts, pharmaceutical compositions, metabolites and prodrugs thereof. These compounds are effective in lowering blood glucose, serum insulin, free fatty acids, cholesterol, triglyceride levels; treatment of obesity, inflammation, autoimmune diseases such as multiple sclerosis, rheumatoid arthritis; treatment and/or prophylaxis of type II diabetes. These compounds are more particularly dipeptidyl peptidase (DPP IV) inhibitors.