Patents Assigned to Vamsi Lab Ltd.
  • Process for preparing beta agonist
    Patent number: 10414717
    Abstract: Disclosed is a process for preparing ?-agonist, 1-(4-amino-3,5-dichlorophenyl)-2-(tert-butylamino) ethanol, of Formula I. The process comprises refluxing 1-(4-amino-3,5-dichlorophenyl) ethanone of Formula II and selenium dioxide in the presence of 1,4-dioxane to form compound of Formula III. Further, compound of Formula III is heated at a temperature below 30° C. in the presence of t-butyl amine to form compound of Formula IV. The compound of Formula IV is treated with sodium borohydride to form compound of Formula I.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: September 17, 2019
    Assignee: Vamsi Lab Ltd.
    Inventors: G Pratap Reddy, M. Kesava Reddy