Patent ID: 8642765

Claim:
An azaindole-indole coupled compound represented by the formula (IG) or the pharmaceutically acceptable salts thereof: Y═Z (IG) wherein, Y is an azaindole group represented by formula (Y1) or (Y2); Z is an indole group represented by formula (Z1) or (Z2); “═” represents a double bond that is located between the 3-position of the azaindole group (Y) and the 2′- or 3′-position of the indole group (Z); wherein in Y1, Y2, Z1 and Z2, each of R 1 and R 1′ independently represents H or the following groups which may be unsubstituted or substituted by 1 to 3 substituents: C 1 -C 6 alkyl, phenyl, benzyl, acyl, aroyl, glycosyl or diglycosyl protected by acyl, glycosyl or diglycosyl; wherein each of said substituents is selected from: halogen, hydroxyl, C 1 -C 3 alkyl, nitro and amino; each of R 3 and R 3′ independently represents H, halogen, hydroxyl, or the following groups which may be unsubstituted or substituted by 1 to 3 substituents: C 1 -C 4 alkyl, amino, amido, amide, C 1 -C 4 alkoxy, methylthio, phenyl, phenoxy, aryl, aralkyl, trifluoromethyl, acyl, aroyl, sulfonic group, sulfamoyl, isocyanate, or alkyl isocyanate; wherein each of said substituents is selected from: halogen, hydroxyl, C 1 -C 3 alkyl having, nitro and amino; each of R 2 , R 2′ , R 4 , R 4′ and R 5′ is hydrogen; and R represents oxygen, sulfur, an NR 6 group, or an NOR 6 group, wherein R 6 is H or methyl.