480449-70-5Relevant articles and documents
PROCESS FOR PREPARATION OF EDOXABAN
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Page/Page column 17-18, (2021/01/23)
The present invention relates to process for preparation N1-(5-Chloropyridin-2-yl)-N2-[(1S,2R,4S)-4-(N,N-dimethylcarbamoyl)-2-(5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-ylcarboxamido)cyclohexyl]oxamide p-toluene sulfonate monohydrate [edoxaban tosylate monohydrate], the compound of formula (I), comprising reacting compound of formula (VI) with compound of formula (V) to obtain the compound of formula (IV) and further converting it to edoxaban tosylate monohydrate in an industrially feasible process.
Methyltetrahydropyridinothiazole active compound and preparation method and application thereof
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Paragraph 0092-0107, (2020/11/12)
The invention relates to a methyltetrahydropyridinothiazole active compound (compound (I)) and a preparation method and application thereof. The preparation method comprises the following steps: making 5-methyl-4, 5, 6, 7-tetrahydro[1, 3]thiazolo[5, 4-c]p
Method for preparing edoxaban from trichloroacetophenone onium salt derivatives
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Paragraph 0085-0090, (2020/07/21)
The invention provides a method for preparing edoxaban by using 2, 2, 2-trichloro-1-(4, 5, 6, 7-tetrahydro-5-methylthiazolo[5, 4-c]pyridinium-1-yl) ethanone chloride. The preparation method comprisesthe following steps: preparing 2, 2, 2-trichloro-1-(4, 5, 6, 7-tetrahydro-5-methylthiazolo[5, 4-c]pyridinium-1-yl) ethanone chloride, namely 109C5-11; the invention discloses a preparation method of N1[(1S, 2R, 4S)-2-amino-4-[(dimethylamino) carbonyl]cyclohexyl]-N2(5-chloro-2-pyridyl) oxalamide dimesylate, namely 109T2-31. The 109C5-11 is used as an acylation reagent to prepare the edoxaban with 109T2-31. The preparation method comprises the following steps: preparing the edoxaban by using the 109C5-11 as the acylation reagent; the novel method overcomes the defect that expensive condensing agents EDCI.HCl and activating agents HOBt need to be used in the prior art. The new method provided by the invention is beneficial to more economically and more efficiently realizing industrial scale production of the Edoxaban p-toluenesulfonate hydrate.
Intermediate for preparing edoxaban free alkali, and preparation method and application of intermediate
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, (2020/10/21)
The invention relates to an intermediate for preparing edoxaban free alkali, and a preparation method and application of the intermediate. The preparation method of the intermediate comprises the following step: reacting 5-methyl-4,5,6,7-tetrahydro[1,3]th
Preparation method of high-purity edoxaban
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Paragraph 0023-0062, (2020/09/12)
The invention belongs to the field of organic synthesis, and particularly relates to a preparation method of high-purity edoxaban. The existing process for synthesizing edoxaban generally has the problems of low product purity, high impurity content, single and low-efficiency purification means, more three wastes and the like, and urgently needs to solve the problems in industry to realize industrialization of the edoxaban. In order to solve the problem, the invention provides the method for industrially producing high-purity edoxaban. According to the method, a halogenated hydrocarbon and analcohol mixed solvent are used for recrystallizing the product, the quality of the product is improved, the impurity content is reduced, the liquid chromatographic purity of the product is not lower than 99.0%, the single impurity content does not exceed 0.1%, and the method provided by the invention is relatively high in yield, less in three wastes, good in product quality and suitable for industrial production.
Preparation method of edoxaban
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, (2019/07/08)
The invention relates to a new preparation route and a new method for a p-toluenesulfonic acid edoxaban hydrate and intermediates thereof. The new method comprises the steps that a high-reactivity compound 109A4x is prepared; a compound 109C6x is prepared by using a new synthesizing method; new compounds 109E8-01, 109E9x and 109T7-01 are prepared; the p-toluenesulfonic acid edoxaban hydrate is prepared by using the intermediates. By using the new method and the new route, the reaction step of copious cooling is omitted, and dangerous elemental sulfur, high-risk n-butyllithium and high-risk azides are prevented from being used. In a word, by means of the method, the p-toluenesulfonic acid edoxaban hydrate and the key intermediates thereof are more easily and safely prepared at a lower coston an industrialization scale.
METHOD FOR PREPARING TERT-BUTYL N-((1R,2S,5S)-2-((2-((5-CHLOROPYRIDIN-2-YL)AMINO)-2-OXOACETYL)AMINO)-5-(DIMETHYLCARBAMOYL)CYCLOHEXYL)CARBAMATE
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, (2019/09/04)
The present invention relates to a method for preparing tert-butyl N- ((1R,2S,5S)-2-((2-((5-chloropyridin-2-yl)amino)-2-oxoacetyl)amino) -5-(dimethylcarbamoyl)cyclohexyl)carbamate of formula (I), or a salt or solvate thereof,characterized in that it comprises the steps of a) mixing tert-butyl N-((1R,2S,5S)-2-amino-5-(dimethylcarbamoyl) cyclohexyl)carbamate of formula (A) with ethyl 2-((5-chloropyridin-2- yl)amino)-2-oxoacetate of formula (B) in an organic solvent; b) mixing a base with the resulting mixture of step (a); and c) stirring the mixture obtained in step (b). The method substantially facilitates the obtention of the compound of formula (I), leading to a reduction in the viscosity of the reaction medium and improving product yield and/or product purity. Formulae (I), (B), (A).
METHOD OF PRODUCING EDOXABAN
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, (2020/02/07)
PROBLEM TO BE SOLVED: To provide a method of producing edoxaban, which exhibits FXa inhibitory effect and is useful as an agent for preventing and/or treating a thrombotic and/or embolic disease, where the method realizes low cost, high reaction efficiency, reduced time consumption, and high product purity and is suitable for large-scale industrial production. SOLUTION: A method of producing edoxaban (formula 1) includes a method illustrated by the reaction formula in the figure. SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT
Processes for the Preparation of Edoxaban and Intermediates Thereof
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Paragraph 0318; 0319; 0320, (2018/07/15)
The present invention provides processes for the preparation of Edoxaban (1) and salts thereof, as well as intermediates thereof. In particular, intermediate compounds and/or salts of the Formulae (3), (4), (6-A), (7-A), (8-A), (9-A) and (10-AS) are provided.
Preparation method of antithrombotic drug
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, (2018/04/02)
The invention relates to a preparation method of an antithrombotic drug, belongs to the technical field of medicinal chemistry and in particular relates to a preparation method of a direct coagulationfactor Xa inhibitor, which is shown as the following reaction. Compared with the existing process, the preparation method has the advantages of mild reaction condition in each step, high yield, simplicity and convenience operation, stable process and suitability for large-scale industrial production.