Patents by Inventor Takenori Natori

Takenori Natori 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).

  • .alpha.galactosylceramide derivatives
    Patent number: 5936076
    Abstract: The present invention relates to the novel .alpha.-galactosylceramide represented by the formula (A): ##STR1## wherein R represents ##STR2## where R.sub.2 represents H or OH and X denotes an integer of 0-26, or R represents --(CH.sub.2).sub.7 CH.dbd.CH(CH.sub.2).sub.7 CH.sub.3 and R.sub.1 represents any one of the substituents defined by the following (a)-(e):(a) --CH.sub.2 (CH.sub.2).sub.Y CH.sub.3,(b) --CH(OH)(CH.sub.2).sub.Y CH.sub.3,(c) --CH(OH)(CH.sub.2).sub.Y CH(CH.sub.3).sub.2,(d) --CH.dbd.CH(CH.sub.2).sub.Y CH.sub.3, and(e) --CH(OH)(CH.sub.2).sub.Y CH(CH.sub.3)CH.sub.2 CH.sub.3,wherein Y denotes an integer of 5-17.The present invention also relates to an anti-tumor agent and an immunostimulator comprising one or more of the aforementioned compounds as effective ingredients.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: August 10, 1999
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Tatsuo Higa, Koji Akimoto, Yasuhiko Koezuka, Teruyuki Sakai, Masahiro Morita, Takenori Natori
  • Sphingoglycolipid compounds and therapeutic uses thereof
    Patent number: 5780441
    Abstract: The present invention relates to a sphingoglycolipid represented by the formula (I): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.5 represent H or a specific monosaccharide; R.sub.3 and R.sub.6 represent H or OH, respectively;R.sub.4 represents H, OH or a specific monosaccharide;X denotes an integer from 19 to 23;R.sub.7 represents any one of the following groups (a)-(g):(a) --(CH.sub.2).sub.11 --CH.sub.3,(b) --(CH.sub.2).sub.12 --CH.sub.3,(c) --(CH.sub.2).sub.13 --CH.sub.3,(d) --(CH.sub.2).sub.9 --CH(CH.sub.3).sub.2,(e) --(CH.sub.2).sub.10 --CH(CH.sub.3).sub.2,(f) --(CH.sub.2).sub.11 --CH(CH.sub.3).sub.2,(g) --(CH.sub.2).sub.11 --CH(CH.sub.3)--C.sub.2 H.sub.5.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: July 14, 1998
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Tatsuo Higa, Takenori Natori, Yasuhiko Koezuka, Kazuhiro Motoki