Patents by Inventor Hiroaki Normura

Hiroaki Normura 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).

  • Phospholipid derivatives
    Patent number: 4778912
    Abstract: Phospholipid derivatives of the formula: ##STR1## wherein R.sup.1 is a higher alkyl, acylmethyl or alkylcarbamoyl group which may be substituted by cycloalkyl; R.sup.2 is a lower alkyl which may be substituted by carboxy, formyl or lower acyl, a carbamoyl or thiocarbamoyl group which is substituted by lower alkyl, or an acetoacetyl group; R.sup.3, R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl, or ##STR2## represents a cyclic ammonio group; and n represents an integer of 8 to 14, and salts thereof have antitumor activity.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: October 18, 1988
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Keizo Inoue, Hiroaki Normura, Tetsuya Okutani