4640-43-1Relevant articles and documents
Preparation method of 3-oxocyclobutyl ammonia
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Paragraph 0010; 0011-0017, (2017/08/29)
The invention relates to a preparation method of 3-oxocyclobutyl ammonia. The preparation method of the 3-oxocyclobutyl ammonia comprises the following steps: conducting reaction on 3-oxocyclobutyl formamide serving as a starting material and an alkaline solution of hypohalous acid salt according to a certain proportion in a reaction solvent and 0 to 80 DEG C to prepare 3-oxocyclobutyl ammonia, diluting the system with water after the reaction, performing continuous extraction by using ethyl acetate, performing concentration under reduced pressure to obtain 3-oxocyclobutyl ammonia, and performing recrystallization on the product by diethyl ether to obtain a pure product. The preparation method of the 3-oxocyclobutyl ammonia is mild in reaction condition, high in speed, easy to operate and control and simple in aftertreatment, and the product has stable quality and high purity.
ISOXAZOLE DERIVATIVES FOR USE IN THE TREATMENT OF PULMONARY DISEASES AND DISORDERS
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Paragraph 0086, (2017/03/21)
The present disclosure features disclosed method of treating disorders such as COPD, bronchitis and/or asthma using disclosed compounds, optionally together with one or more additional active agents. Contemplated methods include administrating orally or by inhalation to a patient one or more disclosed compounds.
DERIVATIVES OF 3-HETEROARYLISOXAZOL-5-CARBOXYLIC AMIDE USEFUL FOR THE TREATMENT OF INTER ALIA CYSTIC FIBROSIS
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Paragraph 0117, (2016/07/27)
The present disclosure is based, in part, on the discovery that disclosed compounds can increase cystic fibrosis transmembrane conductance regulator (CFTR) activity as measured in human bronchial epithelial (hBE) cells.