Patents by Inventor Paul Timothy Grover

Paul Timothy Grover 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).

  • Asymmetric grignard synthesis with cyclic 1,2 aminoalcohols
    Patent number: 6025177
    Abstract: Processes for preparing a single enantiomer of an .alpha.,.alpha.-disubstituted-.alpha.-hydroxy acetic acid, especially cyclohexylphenylglycolic acid (CHPGA), is disclosed. The processes employ cyclic 1,2-aminoalcohols as chiral auxiliaries by forming diastereomeric esters of aminoalcohols or diastereomeric amides of oxazolidines. ##STR1## Intermediates useful in the process are also disclosed.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: February 15, 2000
    Assignee: Sepracor Inc.
    Inventors: Chris Hugh Senanayake, Roger P. Bakale, Qun Kevin Fang, Paul Timothy Grover, Donald L. Heefner, Richard F. Rossi, Stephen Alan Wald
  • Asymmetric grignard synthesis with cyclic 1,2 aminoalcohols
    Patent number: 6013830
    Abstract: Processes for preparing a single enantiomer of an .alpha.,.alpha.-disubstituted-.alpha.-hydroxy acetic acid, especially cyclohexylphenylglycolic acid (CHPGA), is disclosed. The processes employ cyclic 1,2-aminoalcohols as chiral auxiliaries by forming diastereomeric esters of aminoalcohols or diastereomeric amides of oxazolidines. ##STR1## Intermediates useful in the process are also disclosed.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: January 11, 2000
    Assignee: Sepracor Inc.
    Inventors: Chris Hugh Senanayake, Roger P. Bakale, Qun Kevin Fang, Paul Timothy Grover, Donald L. Heefner, Richard F. Rossi, Stephen Alan Wald