Patents Assigned to Raga Consultores, S.L.
  • Process for obtaining 17 &bgr;-(N-tert-butylcarbamoyl)-3-one-4-aza-steroids
    Patent number: 6509466
    Abstract: 17&bgr;-(N-tert-butylcarbamoyl)-3-one-4-aza-steroids (I) can be obtained by a process which comprises the reaction of 17&bgr;-(alkoxycarbonyl)-3-one-4-aza-steroid with lithium tert-butylamide in an organic solvent. Some compounds of formula (I), for example, finasteride, are useful as inhibitors of 5&agr;-reductase, and can be used in the treatment of benign prostatic hyperplasia and alopecia.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: January 21, 2003
    Assignee: Raga Consultores, S.L.
    Inventors: Luis Octavio Silva Guisasola, Cristina Blanco Fernandez, Antonio Lorente Bonde-Larsen, Jorge Martin Juarez
  • Process for obtaining 17 beta-(N-tert-butylcarbamoyl)-3-one4-aza-steroids
    Publication number: 20010008895
    Abstract: 17&bgr;-(N-tert-butylcarbamoyl)-3-one-4-aza-steroids (I) can be obtained by a process which comprises the reaction of 17&bgr;-(alkoxycarbonyl)-3-one-4-aza-steroid with lithium tert-butylamide in an organic solvent. Some compounds of formula (I), for example, finasteride, are useful as inhibitors of 5&agr;-reductase, and can be used in the treatment of benign prostatic hyperplasia and alopecia.
    Type: Application
    Filed: March 5, 2001
    Publication date: July 19, 2001
    Applicant: Raga Consultores, S.L.
    Inventors: Luis Octavio Silva Guisasola, Cristina Blanco Fernandez, Antonio Lorente Bonde-Larsen, Jorge Martin Juarez