857890-39-2Relevant articles and documents
Novel method for the synthesis of lenvatinib using 4-nitrophenyl cyclopropylcarbamate and their pharmaceutical salts
Sadineni, Ravi Kumar,Rapolu, Rajesh Kumar,Raju, V. V. N. K. V. Prasada,Srinivasu,Malladi, Sireesha,Mulakayala, Naveen
, p. 1475 - 1483 (2020/11/05)
4-Nitrophenyl cyclopropylcarbamate was deployed as a novel synthon for the synthesis of anticancer drug lenvatinib. 4-Nitrophenyl cyclopropylcarbamate was prepared by the reaction of 4-nitrophenyl chloroformate and cyclopropyl amine in acetonitrile at room temperature. Furthermore, lenvatinib was synthesized by reacting 4-(4-amino-3-chlorophenoxy)-7-methoxyquinoline-6-carboxamide with 4-nitrophenyl cyclopropylcarbamate in good yields. Apart from the synthesis of lenvatinib, citrate, phosphate, malate and oxalate salts of?lenvatinib were also reported in good yields.
Preparation method of lenvatinib mesylate
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Paragraph 0016-0018, (2021/01/15)
The invention relates to a preparation method of lenvatinib mesylate, in particular to a method for efficiently synthesizing lenvatinib mesylate by taking 4-chloro-6-cyano-7-methoxy quinoline and 2-chloro-4-hydroxy aniline formic acid cyclopropanamide as raw materials through two steps of substitution reaction and hydrolysis reaction. The preparation method of lenvatinib mesylate provided by the invention is a preparation method which is short in steps, high in yield, low in cost, less in three wastes, good in product purity and suitable for industrialization.
Method for refining Lenvatinib mesylate
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, (2020/03/02)
The invention discloses a method for refining Lenvatinib mesylate. The method for refining the Lenvatinib mesylate, provided by the invention, comprises the following step: subjecting a solution formed by an organic solvent and crude Lenvatinib mesylate t
Synthesis method of lenvatinib and new intermediate
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, (2020/07/24)
The invention discloses a synthesis method of lenvatinib and a new intermediate. The method comprises the following steps: step 1, taking 4-amino-3-chlorophenol hydrochloride and 4-chloro-7-methoxy-6-amido quinoline as initial raw materials, and carrying
Preparation method of high-purity lenvatinib mesylate crystal form C
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, (2020/10/04)
The invention belongs to the technical field of pharmaceutical chemicals and especially relates to a preparation method of a lenvatinib mesylate crystal form C. According to the method, the conditions of high temperature, acid serving as a solvent and the
NOVEL POLYMORPHS OF 4-[3-CHLORO-4-(N'-CYCLOPROPYL UREIDO)PHENOXY]-7-METHOXYQUINOLINE-6-CARBOXAMIDE, ITS SALTS AND PROCESS FOR THE PREPARATION THEREOF
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, (2019/06/23)
The present invention relates to novel polymorphs of 4-[3-chloro-4-(N'- cyclopropyl ureido) phenoxy]-7- methoxyquinoline- 6- carboxamide methanesulfonate represented by following structural formula-1a and process for preparation thereof. Further, the pres
PROCESS FOR THE PREPARATION OF LENVATINIB OR ITS SALTS THEREOF
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, (2019/05/30)
The present invention provides a process for the preparation of Lenvatinib or its salts thereof. The present invention also provides a crystalline form of Lenvatinib, which is characterized by the PXRD pattern as shown in figure 1. The present invention a
AN IMPROVED PROCESS FOR THE PREPARATION OF LENVATINIB
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, (2019/02/06)
The present invention relates to an improved and economic industrial process for the preparation of Lenvatinib and salt thereof. The present invention also relates to method and novel use of a reagent for preparing an amorphous form of Lenvatinib mesylate
Preparation method of lenvatinib and its salts
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, (2019/06/30)
The invention discloses a preparation method of lenvatinib and its salts, wherein N-methylpyrrolidone is used as a reaction solvent in the step of condensation with phenyl chloroformate. The preparation method has the advantages that the danger is success
Preparation method of lenvatinib mesylate crystal form B
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Page/Page column 0016-0025, (2019/10/01)
The present invention relates to a preparation method of a lenvatinib mesylate crystal form B. The method includes: reacting 4-(3-chloro-4-(cyclopropyl amino carbonyl)aminophenoxy)-7-methoxy-6-quinoline carboxamide with methanesulfonic acid in a specific