PROCESS FOR PREPARATION OF TENELIGLIPTIN

FIELD: chemistry.SUBSTANCE: invention relates to a process for the preparation of teneligliptin, a compound of formula I, or a salt thereof, or a hydrate thereof. Process comprises a) reacting a compound of formula 11 with bis-(2-chloroethyl)amine, or an N-protected derivative thereof, or a salt the...

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Hauptverfasser: BKHADANE Shajlendra Nilkantkh, PATIL Dzhajant Prakashrao, CHAUDKHAR Uddkhav Popat, BKHIRUD Shekkhar Bkhaskar, EMIREDDI Venkataramana Reddi, KADAM Suresh Makhadev, KALE Ramchandran Vishnu, PATIL Ulkhas Digambar, KANSAGRA Bipin Parsottam
Format: Patent
Sprache:eng ; rus
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Zusammenfassung:FIELD: chemistry.SUBSTANCE: invention relates to a process for the preparation of teneligliptin, a compound of formula I, or a salt thereof, or a hydrate thereof. Process comprises a) reacting a compound of formula 11 with bis-(2-chloroethyl)amine, or an N-protected derivative thereof, or a salt thereof, to obtain a compound of formula Int-B, or an N-protected derivative thereof, or a salt thereof or a) reacting 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde, a compound of formula 30, with piperazine-1-carboxylic acid tert-butyl ester to obtain tert-butyl-4-(4-formyl-3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazine-1-carboxylate, a compound of formula 31, which is then deprotected to obtain a compound of formula Int-B; b) reacting a compound of formula Int-B, or an N-protected derivative thereof, or a salt thereof with a compound of formula 13 to obtain a compound of formula 14 wherein R is an amino protecting group selected from the group consisting of aralkyl, acyl, lower alkoxycarbonyl, aralkyloxycarbonyl, lower alkanesulfonyl, arylsulfonyl, tri- (lower alkyl) silyl, triphosgene; and c) deprotecting the compound of formula 14 to produce teneligliptin, a compound of formula I, or a salt thereof or a hydrate thereof. Invention also relates to a process for the preparation of teneligliptin 2,5 hydrobromide hydrate, which comprises the crystallisation of teneligliptin 2,5 hydrobromide or a hydrate thereof from a solvent selected from the group consisting of methanol, n-butanol, t-butanol, dimethylacetamide, dimethylformamide, tetrahydrofuran, and mixtures thereof.,,,.EFFECT: processes according to the invention enables to obtain teneligliptin or its salts with high yields and purity.8 cl, 5 dwg, 18 ex Изобретение относится к способу получения тенелиглиптина, соединения формулы I, или его соли, или гидрата. Способ включает а) осуществление взаимодействия соединения формулы 11 с бис-(2-хлорэтил)амином, или его N-защищенным производным, или его солью с получением соединения формулы Int-B, или его N-защищенного производного, или их соли или а) осуществление взаимодействия 5-хлор-3-метил-1-фенил-1Н-пиразол-4-карбальдегида, соединения формулы 30, с трет-бутиловым сложным эфиром пиперазин-1-карбоновой кислоты с получением трет-бутил-4-(4-формил-3-метил-1-фенил-1Н-пиразол-5-ил)пиперазин-1-карбоксилата, соединения формулы 31, с которого далее снимают защиту с получением соединения формулы Int-B; b) осуществление взаимодействия соединения формулы Int-B, или его N-