Patents by Inventor Osamu Nagase

Osamu Nagase 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: 4317771
    Abstract: Muramyldipeptide derivatives of the formula (I): ##STR1## wherein X represents an amino acid residue such as of L-alanine, L-serine, L-valine, glycine, etc., and Y represents a group ##STR2## wherein R.sub.1 represents a hydrogen atom, an alkyl group of 1 to 6 carbon atoms, a carboxamide group or a carboxyl group, n represents an integer of 1 to 6, A represents a straight or branched chain, saturated or unsaturated aliphatic hydrocarbon residue of 7 to 30 carbon atoms, and "Acyl" means an acyl group of an aliphatic carboxylic acid having 2 to 6 carbon atoms. These compounds have excellent adjuvant activity and/or prophylactic and therapeutic effects against microbial infections.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: March 2, 1982
    Assignee: Daiichi Seiyaku Co., Ltd.
    Inventors: Tetsuo Shiba, Shozo Kotani, Yuichi Yamamura, Osamu Nagase, Hidemasa Ogawa