Patents by Inventor Giulio Perdoncin

Giulio Perdoncin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing an organic synthesis intermediate
    Patent number: 5023381
    Abstract: A process is described for the preparation of 2-methoxy-6-propionyl-naphthalene, an intermediate in the synthesis of naproxen.The process consists of Friedel-Crafts acylation of 2-methoxy-naphthalene, and obviates the drawbacks related to the use of nitrobenzene as solvent.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: June 11, 1991
    Assignee: Zambon Group S.p.A.
    Inventors: Giulio Perdoncin, Claudio Giordano, Maurizio Paiocchi, Roberto Casagrande
  • Process for preparing 3alpha, 7beta-dihydroxy-5beta-cholanic acid
    Patent number: 4486352
    Abstract: Process to reduce stereoselectively 3alpha-hydroxy-7-keto-5beta-cholanic acid to 3alpha,7beta-dihydroxy-5beta-cholanic acid in ter.alcohols by using, as reducing agent, sodium metal in the presence of other metal salts.Examples of metal salts particularly useful are: potassium, cesium and rhubidium organic salts and, more particularly, potassium acetate or potassium ter.butylate.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: December 4, 1984
    Assignee: Zambon S.p.A.
    Inventors: Claudio Giordano, Francesco Minisci, Mariano Meneghin, Giulio Perdoncin