Patents by Inventor R.-Erich Klemke

R.-Erich Klemke 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: 6093805
    Abstract: Novel glycosides, especially steroidal and non-steroidal glycosides are provided. The steroidal and non-steroidal glycosides preferably are prepared from aglycons which possess valuable properties such as pharmacological properties. The glycosides are prepared from useful aglycons and possess useful properties which are the same as those of their respective unglycosylated aglycons. The glycosides are provided in acylated and deacylated form. The acylated glycosides after hydrolysis of the acyl groups possess enhanced water solubility properties, as illustrated in the case where the aglycon is acetominophen.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: July 25, 2000
    Assignee: The Regents of the University of Michigan
    Inventors: Brian K. Shull, Roeland J. Tuinman, Todd A. Houston, R. Erich Klemke, Masato Koreeda
  • Patent number: 5693767
    Abstract: Novel glycosides, especially steroidal and non-steroidal glycosides are provided. The steroidal and non-steroidal glycosides preferably are prepared from aglycons which possess valuable properties such as pharmacological properties. The glycosides are prepared from useful aglycons and possess useful properties which are the same as those of their respective unglycosylated aglycons. The glycosides are provided in acylated and deacylated form. The acylated glycosides after hydrolysis of the acyl groups possess enhanced water solubility properties, as illustrated in the case where the aglycon is acetominophen.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: December 2, 1997
    Assignee: Harrier Inc.
    Inventors: R. -Erich Klemke, Masato Koreeda, Todd A. Houston, Brian K. Shull, Roeland J. Tuinman
  • Patent number: 5496806
    Abstract: Novel glycosides 7-ketosteryl di-O-acyl-pyranoside and 7-.beta.-hydroxycholesteryl 2,3-dideoxy-.alpha.-D-erythro-hex-2-enopyranoside. The glycosides possess valuable pharmacological properties as a medicament. In particular, the cholesterol glycoside in vivo exhibits a selective cell-destructive activity on malignant cells which activity is substantially free of side effects on normal cells. The glycosides possess useful properties, especially pharmacological properties which are the same as the respective unglycosylated aglycon.
    Type: Grant
    Filed: May 6, 1994
    Date of Patent: March 5, 1996
    Assignee: R. Erich Klemke
    Inventor: R. Erich Klemke
  • Patent number: 5278296
    Abstract: Novel glycosides, especially steroidal glycosides, and a novel method of their production, are provided. For the novel method of producing novel glycosides, hydroxysteryl compounds are glycosylated with tri-O-acyl glucal using molecular iodine as a reaction catalyst. In this method an alcohol or phenol, especially a hydroxy-steroid such as a water-insoluble cholesterol, is glycosylated, such that the glycosylation is performed in a single step. The resulting steryl pyranoside is by oxidation converted to the corresponding 7-ketosteryl di-O-acyl-pyranoside. The latter pyranoside is selectively reduced to provide the corresponding 7-.beta.-hydroxysteryl 2,3-dideoxy-.alpha.-D-erythro-hex-2-enopyranoside. The steroidal glycosides obtained in this way possess valuable pharmacological properties. In particular, the glycosides in vivo exhibit a selective cell-destructive activity on malignant cells which activity is substantially free of side effects on normal cells.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: January 11, 1994
    Assignee: Gelman Sciences Inc.
    Inventor: R.-Erich Klemke