Patents by Inventor Livio Buracchi

Livio Buracchi 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 the preparation of the anhydride of N-formyl-L-aspartic acid
    Patent number: 4526985
    Abstract: A process for the preparation of the anhydride of N-formyl-L-aspartic acid by reacting L-aspartic acid with nearly stoichiometric amounts of formic acid and acetic anhydride, under controlled conditions of temperature, reaction and addition times. The product is a known intermediate in the synthesis of .alpha.-L-aspartyl-L-phenylalanine methyl ester, a known sweetening agent.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: July 2, 1985
    Assignee: Pierrel S.p.A.
    Inventors: Vincenzo Giobbio, Giorgio Ornato, Livio Buracchi, Alberto Mangia
  • Process for the removal of the formyl group from N-formyl peptides and esters thereof
    Patent number: 4434097
    Abstract: A process for the removal of the formyl group in N-formylated peptides or their esters is described. The N-formyl compound is reacted with hydrazine or a substituted hydrazine of formula I: ##STR1## at a pH between 1 and 3.5, keeping the pH constant during the reaction. The process is particularly useful for the preparation of aspartam.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: February 28, 1984
    Assignee: Pierrel S.p.A.
    Inventors: Vincenzo Giobbio, Giorgio Ornato, Livio Buracchi, Alberto Mangia
  • Pharmacological preparation composed of a quinoxaline derivative mixed with sodium bicarbonate
    Patent number: 4347247
    Abstract: A pharmacological preparation for use in animal husbandry, consists essentially of sodium bicarbonate and an active ingredient which is either 2-methyl-3 (.beta.-hydroxyethylcarbamoyl) quinoxaline-1,4-di-N-oxide or N.sub.1, N.sub.4 -dioxo-quinoxaline-2-methyleneimino-N-methylurethane. The sodium bicarbonate imparts fireproofness to what would otherwise be a highly flammable preparation.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: August 31, 1982
    Assignee: Pierrel S.p.A.
    Inventors: Vincenzo Giobbio, Livio Buracchi
  • Process for synthesizing 2-sulphanilamido-3-methoxypyrazine
    Patent number: 4299962
    Abstract: 2-Sulphanilamido-3-methoxypyrazine is produced in high purity and good yield, by reacting 2,3-dichloropyrazine with sulphanilamide in the presence of potassium carbonate, an aprotic solvent such as dimethylformamide and a second solvent such as toluene which is inert toward the reagents and is adapted to remove the water of reaction.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: November 10, 1981
    Assignee: Pierrel S.p.A.
    Inventors: Vincenzo Giobbio, Giorgio Ornato, Livio Buracchi