Patents by Inventor Alan Gibson Long

Alan Gibson Long 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).

  • .DELTA..sup.3 -3-Vinyl or substituted vinyl-4-carboxy cephalosporins
    Patent number: 4107431
    Abstract: The invention is concerned with .DELTA..sup.3 -4-carboxy cephalosporin antibiotics possessing a 3-vinyl or substituted 3-vinyl groups as well as with phosphorous intermediates useful in the preparation thereof.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: August 15, 1978
    Assignee: Glaxo Laboratories Limited
    Inventors: John Colin Clark, James Kennedy, Alan Gibson Long, Niall Galbraith Weir
  • Certain thiazolo azetidinone compounds
    Patent number: 3991069
    Abstract: Novel semisynthetic .beta.-lactam intermediates of use in the production of cephalosporins, penicillins and related .beta.-lactam antibiotic compounds are provided. The novel compounds are prepared from .beta.-lactams obtained by cleavage of the 1,2-sulphur-carbon bond of a penicillin 1-oxide (with subsequent internal or external trapping of the sulphur atom to leave a residual substituent as the .beta.-lactam nitrogen) by removal of the said residual substituent by an oxidative cleavage reaction.
    Type: Grant
    Filed: July 30, 1971
    Date of Patent: November 9, 1976
    Assignee: Glaxo Laboratories Limited
    Inventors: Derek Harold Richard Barton, Alan Gibson Long, Brian Edgar Looker, Edward McKenzie Wilson, William George Elphinstone Underwood
  • Process for the preparation of esters of N-blocked penicillin acids which comprises reacting the acid or a salt thereof with a primary amine and a nitrosating agent
    Patent number: 3960843
    Abstract: A process is described for the preparation of esters of N-blocked amino acids (such as penicillins or cephalosporins) wherein the amino acid or a salt thereof is reacted with a primary amine and nitrosating agent.
    Type: Grant
    Filed: July 9, 1973
    Date of Patent: June 1, 1976
    Assignee: Glaxo Laboratories Limited
    Inventors: Alan Gibson Long, Derek Walker, David Thomas Eastlick, Harry Carson Stables
  • Cephalosporin compounds
    Patent number: 3948906
    Abstract: 7.beta.-Amino- and acylamidoceph-3-em-4-carboxylic acids having at the 3-position a halo-, formyloxy-, isothiocyanato- or haloacetoxymethyl group and salts and esters thereof. These compounds are useful as starting compounds for preparing 7.alpha.-acylamidoceph-3-em-4-carboxylic acids having a group at the 3-position, other than 3-acetoxymethyl, by reaction with a nucleophile. The compounds prepared have modified antibiotic activity.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: April 6, 1976
    Assignee: Glaxo Laboratories Limited
    Inventors: Stephen Eardley, James Kennedy, Alan Gibson Long