Patents by Inventor Nobuyasu Enoki

Nobuyasu Enoki 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).

  • HP530 compounds and process for preparing the same
    Patent number: 5168100
    Abstract: Disclosed are novel HP530 compounds, their derivatives or their pharmaceutically permissible salts, a process for preparing them and an antitumor substances containing them as active ingredient. The HP530 compounds and their derivatives expressed by the general formula below can be prepared by cultivating Streptomyces sp. HP530 (FERM BP-2786) or and chemically derivation. ##STR1## where X is a C.sub.2 -C.sub.4 acyl group or a hydrogen atom, Y is a C.sub.2 -C.sub.4 acyl group or a hydrogen atom and Z is a group expressed by the formula (II), (III) or (IV).
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: December 1, 1992
    Assignee: Sapporo Breweries Limited
    Inventors: Naoki Abe, Nobuyasu Enoki, Yasukazu Nakakita, Hideaki Uchida, Ryoichi Sato, Suguru Takeo, Nobuhiro Watanabe