552301-45-8Relevant articles and documents
Preparation method of bilastine intermediate
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, (2020/12/31)
The invention belongs to the field of medicinal chemistry, and relates to a preparation method of a bilastine intermediate 2-(4-(2-hydroxyethyl) phenyl)-2-methyl propionic acid and derivatives thereof. The 2-(4-(2-hydroxyethyl) phenyl)-2-methyl propionic acid and the derivative thereof are obtained by taking a 4-halogenated phenyl-2-methyl propionic acid derivative as a raw material through the steps of alkylation, hydrolysis, reduction and the like, and the compound can be used for synthesizing bilastine.
Method for preparing Bilastine intermediate
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Paragraph 0028-0040, (2020/02/27)
The invention discloses a method for preparing a Bilastine intermediate. A key quaternary carbon unit of Bilastine is constructed by using special activity of ethylene sulfate, so that the consumptionof high-toxicity materials is avoided, the operability is improved, and the industrialized production cost is reduced. Meanwhile, a novel synthesis route is designed through combining unique properties of the intermediate and an original synthesis policy of the Bilastine, two protective agents are simultaneously removed in one step, synthesis steps are reduced, the production cost is reduced, andmeanwhile, an expensive catalyst in the prior art is avoided.
Preparation method of new anti-allergic medicine Bilastine intermediate
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, (2017/08/28)
The invention discloses a preparation method of a new anti-allergic medicine Bilastine intermediate. Quaternary carbon atoms difficult to construct are constructed by using a mild addition reaction, carboxylic groups are introduced at room temperature by
Bilastine preparation method
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Paragraph 0073; 0074; 0075; 0076; 0077; 0078, (2017/04/14)
The invention discloses a Bilastine preparation method. The Bilastine preparation method includes that 2-nitroaniline which is low in price and easy to obtain is taken as a raw material which is subjected to reduction-n-cyclohexylmaleimide reaction, alkyl