Patents by Inventor Billy G. Jackson

Billy G. Jackson 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).

  • Azetidinone intermediates to carbacephalosporins and process
    Patent number: 5646275
    Abstract: 7.beta.-Amino-3-hydroxy-1-carba(1-dethia)-3-cephem-4-carboxylic acid esters are provided via cyclization of compounds of Formula IIA below. ##STR1## The 7.beta.-Amino-3-hydroxy-l-carba(1-dethia)-3-cephem-4-carboxylic acid esters are useful chiral intermediates in the synthesis of .beta.-lactam antibiotics.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: July 8, 1997
    Assignee: Eli Lilly and Company
    Inventors: John P. Gardner, Billy G. Jackson
  • Azetidinone intermediates to carbacephalosporins and process
    Patent number: 5637692
    Abstract: 7.beta.-Amino-3-hydroxy-1-carba(1-dethia)-3-cephem-4-carboxylic acid esters are provided via cyclization of cis-3-(substituted amino)-1-(2-substituted 2-oxoethyl)-4-substituted azetidinones. The 7.beta.-amino-3-hydroxy-1-carba (1-dethia)-3-cephem-4-carboxylic acid esters are useful chiral intermediates to .beta.-lactam antibiotics.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 10, 1997
    Assignee: Eli Lilly and Company
    Inventors: James Aikins, John P. Gardner, Billy G. Jackson, John R. Rizzo, Eddie V. Tao
  • Azetidinone intermediates to carbacephalosporins and process
    Patent number: 5453503
    Abstract: 7.beta.-Amino-3-hydroxy-1-carba(1-dethia)-3-cephem-4-carboxylic acid esters are provided via cyclization of cis-3-(substituted amino)-1-(2-substituted 2-oxoethyl)-4-substituted azetidinones. The 7.beta.-amino-3-hydroxy-1-carba(1-dethia)-3-cephem-4-carboxylic acid esters are useful chiral intermediates to .beta.-lactam antibiotics.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: September 26, 1995
    Assignee: Eli Lilly and Company
    Inventors: James Aikins, John P. Gardner, Billy G. Jackson, John R. Rizzo, Eddie V. Tao
  • Isolation of syn-7-(2-amino-4-thiazolyl)-(methoxyimino)acetamido-3-acetoxymethyl-3-ce phem-4-carboxylic acid
    Patent number: 4252951
    Abstract: Syn-7-(2-amino-4-thiazolyl)-(methoxyimino)-acetamido-3-acetoxymethyl-3-ceph em-4-carboxylic acid is isolated by formation of cyclic ether solvates.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: February 24, 1981
    Assignee: Eli Lilly and Company
    Inventors: Billy G. Jackson, Donna A. Nezich
  • Decolorizing process for 7-amino-3-(((2-methyl-1,3,4-thiadiazol-5-yl)thio)methyl)-3-cephem-4-carb oxylic acid
    Patent number: 4115645
    Abstract: The present invention is directed to the use of sodium sulfite and sodium dithionite for the decolorization of 7-amino-3-(((2-methyl-1,3,4-thiadiazol-5-yl)thio)methyl)-3-cephem-4-carbox ylic acid.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: September 19, 1978
    Assignee: Eli Lilly and Company
    Inventors: Billy G. Jackson, Roger E. McPherson
  • Process for preparing cefazolin
    Patent number: 3954745
    Abstract: Cefazolin is prepared by treating a solvate of N,N-dimethylformamide and the hydrochloride salt of 7-amino-3-(2-methyl-1,3,4-thiadiazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid with 1H-tetrazole-1-acetyl chloride in the presence of N,N-dimethylacetamide as solvent.
    Type: Grant
    Filed: September 12, 1974
    Date of Patent: May 4, 1976
    Assignee: Eli Lilly and Company
    Inventors: Billy G. Jackson, Charles W. Ryan