Patents by Inventor Sidney Teitel

Sidney Teitel 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: 4559403
    Abstract: Substituted isoquinolines of the formula ##STR1## wherein R is a lower alkoxy, n is the integer zero or 1, andA is ##STR2## wherein R.sub.1 is phenyl halophenyl, lower-alkylphenyl or lower-alkoxyphenyl, and pharmaceutically acceptable acid addition salts thereof, are described. The compounds of formula I are useful in the treatment of cerebral and cardiac ischemias.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: December 17, 1985
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Hans Bruderer, Richard W. Kierstead, John G. Mullin, Jr., Keiji Nakamura, Mitsuru Tateishi, Sidney Teitel, Jay P. O'Brien
  • Patent number: 4340736
    Abstract: Aminoaryl esters and amino-lower alkyl amides of carboxy substituted barbiturates are linked via an amide linkage to carboxylated latex polymers to form reagents which are useful in a sensitive diagnostic test to detect the presence of barbiturates in body fluids.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: July 20, 1982
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Antonino Focella, John E. Heveran, Sidney Teitel, Manfred Weigele
  • Patent number: 4226774
    Abstract: A process for the preparation of .alpha.-methyl-carbazole-2-acetic acids, which comprises reacting an .alpha.-methyl-3-oxocyclohexane malonic acid di-lower alkyl ester with a substituted phenylhydrazine, and thereafter sequentially oxidizing and hydrolyzing the reaction product to obtain the desired acid, is described.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: October 7, 1980
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Harvey Gurien, Sidney Teitel
  • Patent number: 4193923
    Abstract: A process for the preparation of .alpha.-methyl-carbazole-2-acetic acids, which comprises reacting an .alpha.-methyl-3-oxocyclohexane malonic acid di-lower alkyl ester with a substituted phenylhydrazine, and thereafter sequentially oxidizing and hydrolyzing the reaction product to obtain the desired acid, is described.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: March 18, 1980
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Harvey Gurien, Sidney Teitel
  • Patent number: 4158007
    Abstract: A process for the preparation of .alpha.-methyl-carbazole-2-acetic acids, which comprises reacting an .alpha.-methyl-3-oxocyclohexane malonic acid di-lower alkyl ester with a substituted phenylhydrazine, and thereafter sequentially oxidizing and hydrolyzing the reaction product to obtain the desired acid, is described.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: June 12, 1979
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Harvey Gurien, Sidney Teitel
  • Patent number: 4101549
    Abstract: Aminoaryl esters and amino-lower alkyl amides of carboxy substituted barbiturates are linked via an amide linkage to carboxylated latex polymers to form reagents which are useful in a sensitive diagnostic test to detect the presence of barbiturates in body fluids.The large increase in the abuse of therapeutic agents, particularly the barbiturates, by the general population as well as military personnel, has brought with it a substantial need to improve analytical techniques for the determination of such agents in biological fluids. In many instances, medical treatment centers are faced with the immediate need for determining the identity of a barbiturate taken by a patient who is unable, being in a comatose condition, or unwilling to supply such information to the treating physician. Early procedures involved the identification of barbiturates by extraction and thin-layer, gas chromatographic and spectrophotometric methods.
    Type: Grant
    Filed: May 26, 1976
    Date of Patent: July 18, 1978
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Antonino Focella, John Edward Heveran, Sidney Teitel, Manfred Weigele
  • Patent number: 4041040
    Abstract: A novel derivative of ecgonine is described. This compound, 4-hyroxy-benzoyl ecgonine, is useful as a substrate for iodination with a radioactive isotope of iodine such as .sup.125 I. The resulting radiolabeled compound is useful in a radioimmunoassay for benzoyl ecgonine.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: August 9, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: James Gordon Christenson, Harvey Gurien, Sidney Teitel
  • Patent number: 3988349
    Abstract: Racemic organic carboxylic acids are efficiently resolved into their enantiomers with antipodes of .alpha.-methyl-p-nitrobenzylamine.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: October 26, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Clark William Perry, Sidney Teitel
  • Patent number: 3965129
    Abstract: Racemic organic carboxylic acids are efficiently resolved into their enantiomers with antipodes of .alpha.-methyl-p-nitrobenzylamine.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: June 22, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Clark William Perry, Sidney Teitel
  • Patent number: 3965121
    Abstract: Racemic organic carboxylic acids are efficiently resolved into their enantiomers with antipodes of .alpha.-methyl-p-nitrobenzylamine.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: June 22, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Clark William Perry, Sidney Teitel
  • Patent number: 3946041
    Abstract: The present invention relates to the preparation of novel rheadan-type alkaloids and to novel intermediates useful in the preparation thereof. The process utilizes as starting materials a known class of alkaloids of the narcotine or of the hydrastine type. Certain of the said novel intermediates are also pharmaceutically useful in and of themselves. Additionally, certain of the novel intermediates can be converted into other type alkaloids which are also pharmaceutically useful.
    Type: Grant
    Filed: August 8, 1973
    Date of Patent: March 23, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Arnold Brossi, Wilhelm Kloetzer, Sidney Teitel