Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X?CH or N; Z?O or S; L=O or S; M=CR10R11, wherein R10 and R11?H, alkyl, or alkoxy, NR12 wherein R12?H or alkyl; R1, R2, and R3?H or optionally substituted alkoxy; R4?H; R5-8?H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19?H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.

Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X=CH or N; Z=O or S; L=O or S; M=CR10R11, wherein R10 and R11=H, alkyl, or alkoxy, NR12 wherein R12=H or alkyl; R1, R2, and R3=H or optionally substituted alkoxy; R4=H; R5-8=H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19=H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.

Abstract: An objective of the present invention is to provide compounds having antitumor activity. According to the present invention, there is provided compounds represented by formula (I) and pharmaceutically acceptable salts thereof, and solvates thereof: wherein R1 represents H or a substitutable unsaturated five- or six-membered heterocyclic ring; R2 represents H; X represents CH or N; Z represents O or S; E is absent or represents halogen, alkyl, or alkoxy; J represents S or O; and T represents phenyl, an unsaturated five- or six-membered heterocyclic ring, an unsaturated nine- or ten-membered bicyclic carbocyclic ring or heterocyclic ring.

Abstract: An objective of the present invention is to provide novel compounds which have inhibitory activity against autophosphorylation of an FGF receptor family and, when orally or intraveneously administered, can suppress the growth of cancer cells. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X represents CH or N; Z represents O or S; Q represents NR10, CR11R2, carbonyl, O, S(?O)m, wherein m is 0 to 2, or urea; R1 to R3 each independently represent H, OH, halogen, nitro, amino, alkyl, alkoxy or the like in which the alkyl and alkoxy groups are optionally substituted; R4 represents H; R5 to R8 each independently represent H, halogen, alkyl, or alkoxy; and R9 represents an optionally substituted carbocyclic or heterocyclic group.

Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X=CH or N; Z=O or S; L=O or S; M=CR10R11, wherein R10 and R11=H, alkyl, or alkoxy, NR12 wherein R12=H or alkyl; R1, R2, and R3=H or optionally substituted alkoxy; R4=H; R5-8=H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19=H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.

Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X=CH or N; Z=O or S; L=O or S; M=CR10R11, wherein R10 and R11=H, alkyl, or alkoxy, NR12 wherein R12=H or alkyl; R1, R2, and R3=H or optionally substituted alkoxy; R4=H; R5-8=H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19=H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.

Abstract: An objective of the present invention is to provide novel compounds which have inhibitory activity against autophosphorylation of an FGF receptor family and, when orally or intraveneously administered, can suppress the growth of cancer cells. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X represents CH or N; Z represents O or S; Q represents NR10, CR11R2, carbonyl, O, S(?O)m, wherein m is 0 to 2, or urea; R1 to R3 each independently represent H, OH, halogen, nitro, amino, alkyl, alkoxy or the like in which the alkyl and alkoxy groups are optionally substituted; R4 represents H; R5 to R8 each independently represent H, halogen, alkyl, or alkoxy; and R9 represents an optionally substituted carbocyclic or heterocyclic group.

Abstract: An objective of the present invention is to provide compounds having potent antitumor activity.

Abstract: The present invention relates to a process for producing a 4-quinolone derivative, comprising allowing an o-aminoacetophenone derivative to react with a formic acid in an aprotic solvent in the presence of a suitable base, and adding a protic solvent to the reaction mixture. This is a simple process for producing 4-quinolone derivatives, applicable to large-scale commercial production.

Abstract: Quinolone derivatives having a quinolone structure: ##STR1## where Yo is O or S are disclosed, which are useful as cardiotonic agents. Typical examples of the quinolone derivatives include: 6,7-dimethoxy-4 (1H) quinolone (compound 6) and 5-hydroxy-6-methoxy-4(1H) quinolone (compound 1) as typical compounds of the formulae[I] and [I'], respectively, shown in the specification.