Patent ID: 7265248

Claim:
A colchicine derivative represented by one of the following Formulas 1 to 7: wherein R 1 to R 4 individually represent a hydrogen or a substituent; wherein R 9 and R 9′ individually represent a hydrogen or a substituent; wherein R 10 represents sulfur or oxygen, wherein R 11 , R 12 and R 13 individually represent a hydrogen or a substituent; wherein R 14 represents a hydrogen or a substituent, and wherein A represents atoms for forming a cycloalkane ring, wherein A is substituted or unsubstituted; wherein R 5 represents a sulfur or an oxygen atom, wherein R 6 and R 7 individually represent a hydrogen or a substituent; wherein R 8 represents a hydrogen or a substituent; a pharmaceutically acceptable salt of a compound represented by Formulas 1 to 7.