Patents by Inventor Ian Campbell Lennon

Ian Campbell Lennon 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).

  • Patent number: 7935841
    Abstract: The invention concerns an enantiomerically enriched compound of formula (1) or the opposite enantiomer thereof wherein each of Ar1—Ar4 represent the same or different aromatic groups of up to 20 carbon atoms and the bridging group X is the formula (5) in which * denotes points of attachment to phosphorus atoms and methods of making thereof.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: May 3, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Philip M. Jackson, Ian Campbell Lennon, Martin E. Fox
  • Publication number: 20090099358
    Abstract: The invention is a set of novel bisphospholane ligands that can be complexed with transition metals. These complexes are useful as catalysts in asymmetric reactions such as asymmetric hydrogenation.
    Type: Application
    Filed: April 18, 2007
    Publication date: April 16, 2009
    Inventors: Philip M. Jackson, Ian Campbell Lennon, Martin E. Fox
  • Patent number: 7476757
    Abstract: A process for manufacturing (R)-propynylaminoindans, and alternatively, a process for manufacturing (S)-propynylaminoindans. The chiral propynylaminoindans include alkoxy or alkylcarbamates derivatives. The process comprises transfer or pressure hydrogenation in the presenc of an optically active catalyst to reduce 1-indanones. The chiral product, either (S)- or (R)-indanols undergo nucleophilic substitution to produce the named product. In an additional aspect, the invention relates to novel intermediates and compounds, namely, substituted indanones, substituted (S)-indanols and substituted (R)-indanols.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: January 13, 2009
    Assignee: Teva Pharmaceutical Industries Ltd.
    Inventors: Lee Terence Boulton, Ian Campbell Lennon, Eliezer Bahar
  • Publication number: 20080200720
    Abstract: A process for manufacturing (R)-propynylaminoindans, and alternatively, a process for manufacturing (S)-propynylaminoindans. The chiral propynylaminoindans include alkoxy or alkylcarbamates derivatives. The process comprises transfer or pressure hydrogenation in the presence of an optically active catalyst to reduce 1-indanones. The chiral product, either (S)- or (R)-indanols undergo nucleophilic substitution to produce the named product. In an additional aspect, the invention relates to novel intermediates and compounds, namely, substituted indanones, substituted (S)-indanols and substituted (R)-indanols.
    Type: Application
    Filed: April 15, 2008
    Publication date: August 21, 2008
    Applicant: Teva Pharmaceutical Industries Ltd.
    Inventors: Lee Terence Boulton, Ian Campbell Lennon, Eliezer Bahar
  • Patent number: 7375249
    Abstract: A process for manufacturing (R)-propynylaminoindans, and alternatively, a process for manufacturing (S)-propynylaminoindans. The chiral propynylaminoindans include alkoxy or alkylcarbamates derivatives. The process comprises transfer or pressure hydrogenation in the presence of an optically active catalyst to reduce 1-indanones. The chiral product, either (S)- or (R)-indanols undergo nucleophilic substitution to produce the named product. In an additional aspect, the invention relates to novel intermediates and compounds, namely, substituted indanones, substituted (S)-indanols and substituted (R)-indanols.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: May 20, 2008
    Assignee: TEVA Pharmaceutical Industries Ltd.
    Inventors: Lee Terence Boulton, Ian Campbell Lennon, Eliezer Bahar
  • Publication number: 20030004368
    Abstract: An enantiomerically enriched compound of formula 1, 1
    Type: Application
    Filed: August 19, 2002
    Publication date: January 2, 2003
    Inventors: Philip Mark Jackson, Ian Campbell Lennon
  • Patent number: 6486347
    Abstract: A process for the preparation of a compound having the formula R3R4P—Ar—CO—X wherein Ar is an aryl group bearing the PR3R4 and COX groups in a 1,2-relationship, and optionally bearing also one or more non-interfering groups, R3 and R4 are each a hydrocarbon group optionally substituted by any non-interfering group, and X is OH or a non-interfering group, comprises (i) the reaction of NaPR3R4 with F—Ar—COX, or (ii) when X is an amine group, the reaction of R3R4P—Ar—COOY, OY being OH or a leaving group, with a solution of the amine obtained in situ by adding a base to a salt thereof. Certain ligands prepared by such a process are in a novel, crystalline form.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: November 26, 2002
    Assignee: Chirotech Technology, Ltd.
    Inventors: Ian Campbell Lennon, Ulrich Berens
  • Patent number: 6437152
    Abstract: An enantiomerically enriched compound of formula 1, wherein Ar is phenyl optionally substituted with one or more groups selected from haloalkyl, alkyl and halide. This compound can be isolated in crystalline form, and used in the preparation of (+)-16-[3-trifluoromethyl)phenoxy]-17,18,19,20-tetranor PGF2&agr; isopropyl ester.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: August 20, 2002
    Assignee: Chirotech Technology, Inc.
    Inventors: Philip Mark Jackson, Ian Campbell Lennon
  • Publication number: 20020111499
    Abstract: An enantiomerically enriched compound of formula 1, 1
    Type: Application
    Filed: July 3, 2001
    Publication date: August 15, 2002
    Inventors: Philip Mark Jackson, Ian Campbell Lennon
  • Patent number: 6320068
    Abstract: The present invention pertains to a process for the preparation of an arylphosphine of the formula R1OC—Ar—PR2R3 wherein Ar is aryl or heteroaryl; R1 is an alkoxy or amine group; and R2 and R3 are each any organic group; and each of the respective groups may optionally be substituted with any non-interfering group; which comprises the reaction of a sulfonyloxy compound of the formula R1OC—Ar—OSO2R4 wherein R4 is alkyl, haloalkyl, perhaloalkyl, aryl, aralkyl or alkaryl, with a phosphine of the formula HPR2R3, in a solvent and in the presence of a palladium catalyst and a base. The arylphosphine can then readily be converted to a chiral phosphine ligand.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: November 20, 2001
    Assignee: Chirotech Technology, Ltd.
    Inventors: Stephen Benedict David Winter, Ian Campbell Lennon
  • Patent number: 6294679
    Abstract: An enantiomerically enriched compound of formula 1, wherein Ar is phenyl optionally substituted with one or more groups selected from haloalkyl, alkyl and halide. This compound can be isolated in crystalline form, and used in the preparation of (+)-16 [3-trifluoromethyl)phenoxy]-17,18,19,20-tetranor PGF2&agr; isopropyl ester.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: September 25, 2001
    Assignee: Chirotech Technology Limited
    Inventors: Philip Mark Jackson, Ian Campbell Lennon
  • Publication number: 20010011145
    Abstract: A process for the preparation of a compound having the formula
    Type: Application
    Filed: March 29, 2001
    Publication date: August 2, 2001
    Inventors: Ian Campbell Lennon, Ulrich Berens