Patent EP-0173462-A2 (EP)
Inventor: HONDA TADASHI
IPC: C07H19/04
Filed: 1985-07-29
Abstract: An ellipticine derivative having the general formula:
       
wherein R represents a hydrogen atom, a hydroxyl group, an alkoxyl group having 1 to 4 carbon atoms, or an acyloxy group having 2 to 7 carbon atoms;
     R 2  represents an aldose residue, a deoxyaldose residue, an N-acylaminoaldose residue having a substituted acyl group with 2 to 4 carbon atoms bonded to the N atom, an aldohexuronic amide residue, and aldohexuronic acid residue, an acylated aldose residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 2 to 4 carbon atoms or an arylacyl group with 7 to 9 carbon atoms, an acylated deoxyaldose residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 2 to 4 carbon atoms or an arylacyl group with 7 to 9 carbon atoms, an acylated N-acylaminoaldose residue having an amino group substituted with an acyl group with 2 to 4carbon atoms and having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 2 to 4 carbon atoms or an arylacyl group with 7 to 9 carbon atoms, an acylated aldohexuronic amide residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 2 to 4 carbon atoms or an arylacyl group with 7 to 9 carbon atoms, an acylated aldohexuronic acid residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 2 to 4 carbon atoms or an arylacyl group with 7 to 9 carbon atoms, an acylated aldohexuronic acid ester residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 2 to 4 carbon atoms or an arylacyl group with 7 to 9 carbon atoms, an arylalkylated aldose residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an arylalkyl group with 7 to 8 carbon atoms, an arylalkylated deoxyaldose residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an alkylacyl group with 7 to 8 carbon atoms, an arylalkylated N-acylaminoaldose residue having an amino group with an acyl group with 2 to 4 carbon atoms and having, substituted for the hydrogen of the hydroxyl group of the sugar, an arylalkyl group with 7 to 8 carbon atoms, an arylalkylated aldohexuronic amide residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an arylalkyl group with 7 to 8 carbon atoms, an arylalkylated aldohexuronic acid residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an arylalkyl group with 7 to 8 carbon atoms, an arylalkylated aldohexuronic acid ester residue having, substituted for the hydrogen atom of the hydroxyl group of the sugar, an arylalkyl group with 7 to 8 carbon atoms; and   R 3  represents a hydrogen atom, a linear, branched, cyclic, or cyclic-linear alkyl group having 1 to 5 carbon atoms;   X 0  represents a pharmaceutically acceptable inorganic or organic acid anion; and     
the bond represented by N⊕ - R 2  in the general formula (I) represents a glycoside bond between a nitrogen atom in the 2-position of the ellipticine and a carbon atom in the 1-position of the sugar. These ellipticine derivatives have a strong antineoplastic or antitumor activity and, therefore, are expected to be effective as an antineoplastic or antitumor agent.