Daiichi Seiyaku Co., Ltd.

Daiichi Pharmaceutical Co., Ltd.

Other

Toshiyuki Hamaoka Daiichi Seiyaku Co., Ltd.

Tsuneo Kusama

Tetsuo Shiba

Tsunehiko Soga

Toshiyuki Hamaoka

Hiromi Fujiwara

Ichiro Azuma

Yuichi Yamamura

Shoichi Kusumoto

Tadamasa Hirayama

Akiko Tohgo

Masahiro Komiya

A compound represented by formula (I): ##STR1## wherein R.sup.1 represents --CO--Z.sup.1 --N(Z.sup.11)--CO--Z.sup.2 --H or --CO--Z.sup.3 --H, wherein Z.sup.1, Z.sup.2, and Z.sup.3 each represent an alkylene group having from 1 to 20 carbon atoms, a phenylene group, or a combination thereof, and Z.sup.11 represents a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms which may be substituted with a phenyl group, a phenyl group which may be substituted with an alkyl group having from 1 to 20 carbon atoms, or an alkylene group having from 1 to 20 carbon atoms which may contain therein a phenylene group; R.sup.2 represents --CO--Z.sup.4 --N(Z.sup.12)--CO--Z.sup.5 --H, --CO--Z.sup.6 --H or a hydrogen atom, wherein Z.sup.4, Z.sup.5, and Z.sup.6 each have the same meaning as Z.sup.1, and Z.sup.12 has the same meaning as Z.sup.11 ; Q.sup.1 and Q.sup.2 each represent a carboxyl group or a phosphonoxy group; Q.sup.3 represents a hydrogen atom, a carboxyl group or a phosphonoxy group; m represents 0 or an integer of from 1 to 20; n represents 0 or an integer of from 1 to 20; Y.sup.1 represents an alkylene group having from 1 to 10 carbon atoms which may contain one or more substituents selected from --OCOR.sup.11 and --NHCOR.sup.12, wherein R.sup.11 represents --Z.sup.13 or --Z.sup.7 --N (Z.sup.14)--CO--Z.sup.8 --H (wherein Z.sup.7 and Z.sup.8 each have the same meaning as Z.sup.1, and Z.sup.13 and Z.sup.14 each have the same meaning as Z.sup.11) and R.sup.12 represents --Z.sup.15 or --Z.sup.9 --N(Z.sup.16)--CO--Z.sup.10 --H (wherein Z.sup.9 and Z.sup.10 each have the same meaning as Z.sup.1, and Z.sup.15 and Z.sup.16 each have the same meaning as Z.sup.11), and a salt thereof. The compound inhibits TNF derivation by endotoxin and is therefore useful for the treatment of multiorganic insufficiencies.

Amino sugar derivatives

A disaccharide compound represented by formula (I): ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are as defined in the specification and a salt thereof are disclosed. The compound exhibits excellent antitumor activity and low toxicity and is useful as an antitumor agent.

2-Deoxy-2-aminoglucopyranoside derivatives

Phosphorus containing disaccharide derivatives

Muramyldipeptide active ester derivatives represented by the formula: ##STR1## wherein R.sub.1 represents a straight or branched chain fatty acid residue having 2 to 30 carbon atoms; R.sub.2 represents an active ester residue; and 'Acyl' represents an acyl group having 2 to 6 carbon atoms. These compounds are applicable as haptens for the immunotherapy and exhibit antitumor activity.

Muramyldipeptide active ester derivatives

Muramylpeptide active ester derivatives represented by the formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a fatty acid residue having from 2 to 10 carbon atoms; --COR.sub.2 represents an active ester group; R.sub.3 represents a fatty acid residue having from 1 to 10 carbon atoms; X represents an alanine, N-methylalanine or valine residue; 'Acyl' represents a fatty acid residue having from 2 to 6 carbon atoms; and n represents an integer of from 1 to 6. These compounds are applicable as haptens for the immunotherapy and exhibit antitumor activity.

Muramylpeptide active ester derivatives

Muramyldipeptide derivatives of the formula: ##STR1## wherein Y represents a mycoloyl group or a synthetic higher acyl group having total carbon number of C30-C90 and having at least a branched chain of long alkyl group on the .alpha.-position thereof,

Muramyldipeptide derivatives and process for the preparation thereof

Growing community of inventors

Tokyo, Japan

Tsuneo Kusama