161798-03-4Relevant articles and documents
Design, synthesis, cytotoxic evaluation and molecular docking studies of novel thiazolyl α-aminophosphonates
Gundluru, Mohan,Badavath, Vishnu Nayak,Shaik, Haroon Yasmin,Sudileti, Murali,Nemallapudi, Bakthavatchala Reddy,Gundala, Sravya,Zyryanov, Grigory V.,Cirandur, Suresh Reddy
, p. 1139 - 1160 (2020/11/16)
Abstract: A new class of thiazolyl α-aminophosphonate derivatives was synthesized by one-pot Kabachnik–Fields reaction of ethyl 2-(3-formyl-4-isobutoxyphenyl)-4-methylthiazole-5-carboxylate with various aryl amines and diethyl phosphite under solvent-free conditions using β-cyclodextrin supported sulfonic acid (β-CD-SO3H) as an efficient, reusable and heterogeneous solid acid catalyst. The products were obtained in good to excellent yields at shorter reaction time. All the title compounds were screened for cytotoxic activity against human breast cancer (MCF-7 and MDA-MB-231), prostate cancer (DU-145) liver cancer (HepG2) and HeLa cancer cell lines using sulfarodamine-B (SRB assay). Compounds (8b, –4OMe), (8h, –4NO2) and (8j, –2I, –4CF3) showed better anticancer activity when compared with standard drug Adriamycin. Further in-silico target hunting reveals the anticancer activity of the designed compounds by inhibiting DNA topoisomerase II. Graphical abstract: [Figure not available: see fulltext.].
Synthesis method of febuxostat impurity
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Paragraph 0093-0095, (2020/07/13)
The invention provides a synthesis method of a febuxostat impurity, which is characterized in that 2-[3-formyl-4-isobutoxyphenyl]-4-methylthiazole-5-formic acid is used as a raw material, and the febuxostat impurity is prepared by a four-step synthesis method. The synthesis process provided by the invention has the advantages of mild reaction conditions, no need of special chemical reagents, highyield and purity up to 99%, and can be used as a standard substance or a reference substance for quality control of febuxostat series products.
Method for synthesizing febuxostat and intermediate thereof
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, (2020/05/02)
The invention relates to a method for synthesizing febuxostat and an intermediate thereof, specifically a method for synthesizing 2-(3-formyl-4-isobutoxy-phenyl)-4-methyl-thiazole-5-carboxylic acid ethyl ester. The method comprises the following steps: preparing 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate; enabling the product obtained in the step (a) to react in DMF (Dimethyl Formamide) in the presence of potassium carbonate and bromo-isobutane, adding water and ethyl acetate for extraction, concentrating to obtain an organic layer, and recrystallizing with DMF to obtain 2-(3-formyl-4-isobutoxy-phenyl)-4-methyl-thiazole-5-carboxylic acid ethyl ester. The invention also relates to 2-(3-formyl-4-isobutoxy-phenyl)-4-methyl-thiazole-5-carboxylic acid ethyl ester and 2-(3-formyl-4-hydroxyphenyl)-4-methyl-5-thiazoleethyl formate and application thereof to the preparation of febuxostat. The method of the invention has excellent performance.