1246960-25-7Relevant academic research and scientific papers
Glucovance west Geleg sandbank intermediate process for the preparation of amino acid derivatives
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, (2019/02/02)
The invention discloses a preparation method of a new diabetes drug sitagliptin intermediate aminobenzene butyric acid derivative. The preparation method comprises the following steps of: (1) mixing a compound shown in a formula I with R(+)-alpha-phenethyl and acetic acid to obtain a compound shown in a formula II; (2) mixing the compound shown in the formula II with sodium borohydride and protonic acid or lewis acid to obtain a compound shown in a formula III; (3) mixing the compound shown in the formula III with X to obtain a compound shown in a formula IV; (4) mixing the compound as shown in the formula IV with an inorganic base 1 to obtain a compound shown in a formula V; (5) obtaining a compound shown in a formula VI by the compound shown in the formula V; and (6) mixing the compound shown in the formula VI with an inorganic base 2 to obtain a compound shown in a formula VII.
PROCESS FOR THE PRODUCTION OF SITAGLIPTIN
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, (2014/04/03)
A novel process is described for the synthesis of Sitagliptin, IUPAC name 7-[(3R)-3-amino-1-oxo-4-(2,4,5-trifluorophenyl)butyl]-5,6,7,8-tetrahydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazine, of formula (I).
PROCESS FOR THE PRODUCTION OF SITAGLIPTIN
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, (2012/11/14)
A novel process is described for the synthesis of Sitagliptin, lUPAC name 7-[(3R)-3-amino-1-oxo-4-(2,4,5-trifluorophenyl)butyl]-5,6,7,8-tetrahydro-3-(trifluoromethyl)-1 2,4-triazolo[4,3-a]pyrazine, of formula (I).
METHOD FOR PREPARING DIPEPTIDYL PEPTIDASE-IV INHIBITOR AND INTERMEDIATE
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, (2012/02/01)
The present invention relates to an improved method for preparing dipeptidyl peptidase-IV inhibitor and intermediate. The present invention is able to reduce preparation costs by using low cost reagents on reaction and is able to be used in mass production by improving yield.
Process for the production of sitagliptin
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Page/Page column 11-12, (2012/03/26)
The present invention is directed to a process for the preparation of Sitagliptin, having formula (I)
METHOD FOR MANUFACTURING DIPEPTIDYL PEPTIDASE-IV INHIBITOR AND INTERMEDIATE
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Page/Page column 8, (2012/02/01)
The present invention relates to an improved method for manufacturing dipeptidyl peptidase-IV inhibitor and intermediate. The present invention allows reduction of production costs by reacting low cost reagents, improves yield and is adaptable for mass production.
