55149-83-2Relevant articles and documents
Pyrrole imidazole ring derivative and medical use thereof wherein the compound represented by the general formula (I) has excellent inhibitory effect on and selectivity of dipeptidyl peptidase IV(DPP-IV)
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Page/Page column 65; 66, (2017/08/02)
The present invention relates to a pyrrole imidazole ring derivative and medical use thereof, more particularly a pyrrole imidazole ring derivative represented by the general formula (I) or stereoisomers thereof, pharmaceutically acceptable salts thereof, prodrugs, pharmaceutical compositions containing the derivative, and pharmaceutical applications for the preparation of dipeptidyl peptidase IV(DPP-IV) inhibitors, wherein the definitions of all substitution groups in general formula (I) are the same as those defined in the specification.
Chemoenzymatic method of 1,2,4-triazole nucleoside synthesis: Possibilities and limitations
Konstantinova,Chudinov,Fateev,Matveev,Zhurilo,Shvets,Miroshnikov
, p. 53 - 71 (2013/04/10)
Possibilities and limitations of chemoenzymatic synthesis of novel structural analogues of an antiviral preparation of Ribavirin (1-β-D-ribofuranosyl-1,2,4-triazole-3-carboxamide) were established. A synthesis of various amides of 1H-1,2,4-triazole-3-carboxylic acid and its 5-substituted analogues - potential substrates of purine nucleoside phosphorylase - has been described. Comparative efficiency of preparation methods of these amides, as well as the methods of introduction of functional groups to the C5 position of heterocyclic system, were investigated. Novel analogues of Ribavirin containing various substitutes in the carboxamide group were synthesized. A biotechnological method was developed for the preparation of 1-β-D-ribofuranozyl-1,2,4-triazole-3-carbonitryl, an intermediate in the synthesis of Viramidine, the modern analogue of Ribavirin.
A practical synthesis of ethyl 1,2,4-triazole-3-carboxylate and its use in the formation of chiral 1',2'-seco-nucleosides of ribavirin
Vemishetti,Leiby,Abushanab,Panzica
, p. 651 - 654 (2007/10/02)
A practical and efficient synthesis of ethyl 1,2,4-triazole-3-carboxylate (6a, R'' = H) from ethyl carboethoxyformimidate hydrochloride is described. Alkylation of this heterocycle with the chloromethyl ethers of 1,3-O-dibenzylbutane-1,2R,3S-triol and 1,3