865759-24-6Relevant articles and documents
Identification, characterization and HPLC quantification of process-related impurities in Trelagliptin succinate bulk drug: Six identified as new compounds
Zhang, Hui,Sun, Lili,Zou, Liang,Hui, Wenkai,Liu, Lei,Zou, Qiaogen,Ouyang, Pingkai
, p. 18 - 27 (2016)
A sensitive, selective and stability indicating reversed-phase LC method was developed for the determination of process related impurities of Trelagliptin succinate in bulk drug. Six impurities were identified by LC-MS. Further, their structures were char
Preparation method and application of DPP-IV inhibitor key intermediate
-
, (2022/03/02)
The invention provides a preparation method and application of a DPP-IV inhibitor key intermediate, and belongs to the technical field of organic synthesis and compound preparation. According to the preparation method, 1-methyltripyrimidone is taken as a raw material and reacts with 2-cyano-5-fluorobenzyl bromide in a proper solvent under the catalysis of alkali, so that the key intermediate 2-(6-chloro-3-methyl-2, 4-dioxo-3, 4-dihydro-2H-pyrimidine-1-yl methyl)-4-fluorobenzonitrile of the DPP-IV inhibitor trelagliptin is prepared, and the preparation method is simple and easy to implement. And the intermediate is subjected to a chlorination reaction, such that the target product 2-(6-chloro-3-methyl-2, 4-dioxo-3, 4-dihydro-2H-pyrimidine-1-yl methyl)-4-fluorobenzonitrile is prepared. The trelagliptin free alkali prepared from the intermediate is high in purity, can meet the requirement that the single impurity content is 0.1% or below, can be salified without refining to prepare trelagliptin succinate, and has good practical application value.
Synthesis process of trelagliptin succinate
-
Paragraph 0009; 0027-0028; 0031-0032; 0035-0036; 0039-0040, (2021/06/13)
The present invention discloses a trelagliptin succinate synthesis process, and relates to the technical field of pharmaceutical chemical synthesis. In the process, 2-cyano-5-fluorobenzyl bromide and 6-chloro-3-methyl uracil are adopted as starting raw ma
Trelagliptin succinate bulk drug synthesis process
-
Paragraph 0034; 0035-0037; 0045; 0046-0049; 0056-0059, (2021/03/30)
The invention discloses a trelagliptin succinate bulk drug synthesis process, and relates to the field of pharmacy. The synthesis process comprises the steps: (1) reacting SM1, SM2, an acid-binding agent and a solvent at the temperature of 25-100 DEG C to
Refining method of trelagliptin succinate
-
Paragraph 0016-0018, (2021/03/13)
The invention discloses a refining method of trelagliptin succinate, which is characterized in that a trelagliptin succinate crude product (the purity is 99.76%) is used as an initial raw material, anorganic solvent is added into the trelagliptin succinat
Novel preparation process of trelagliptin succinate
-
Paragraph 0028; 0039-0041; 0048-0059, (2021/04/26)
The invention discloses a novel preparation process of trelagliptin succinate. According to the method, 3-methyl-6-chlorouracil is taken as a starting raw material, toluene, DMF or NMP is taken as a solvent to react with 2-cyano-5-fluorobenzyl bromide und
Preparation method of trelagliptin succinate
-
Paragraph 0045-0052, (2020/07/15)
The invention provides an improved preparation method of trelagliptin succinate. The method comprises the following steps: by using 6-chloro-3-methyluracil and 2-cyano-5-fluorobenzyl bromide as initial raw materials, carrying out substitution reaction twi
A curved geleg sandbank preparation method
-
, (2019/04/04)
The invention claims a curved geleg sandbank preparation method, using methyl urea and malonic acid diethyl ester as an initial raw material for preparing 3 - methyl - 6 - chloro uracil, while at the same time by the 2 - hydroxymethyl - 4 - pentachloro as initial material to prepare 2 - chloromethyl - 4 - pentachloro, then the 3 - methyl - 6 - chloro uracil with 2 - chloromethyl - 4 - pentachloro prepared tune geleg sandbank, the material cost is low, the preparation process is easy to control, convenient for industrial production.
Method for purifying compound
-
Paragraph 0033-0050, (2019/05/22)
The invention discloses a method for purifying 2-[(6-chlorine-3,4-dihydro-3-methyl-2,4-dioxo-1(2H)-pyrimidinyl) methyl]-4-fluorobenzonitrile which is a compound I. The method includes carrying out reaction on 6-chlorine-3-methyluracil and 2-cyano-5-fluoro
Purification method of compound
-
Paragraph 0035-0037, (2019/05/15)
The invention discloses a purification method of 2-[[6-[(3R)-3-amino-1-piperidyl]-3,4-dihydro-3-methyl-2,4-dioxo-1(2H)-pyrimidinyl]methyl]-4-fluoro-benzonitrile, namely a compound 1. A reaction is carried out by taking 2-[(6-chloro-3,4-dihydro-3-methyl-2,