Patent ID: 8829203

Claim:
An indirubin derivative of formula I wherein R represents -(A) n - R 1 or —CO—N(R 2 ,R 3 ) with A being C1-C5 alkylene group, optionally substituted by one or several A 1 radical, A 1 being an halogen Br, OH, OR 4 or NH 2 , R 4 being C1-C5 alkyl; R 1 being halogen, OH, N(R 2 , R 3 ); R 2 and R 3 , identical or different, being C1-C5 alkyl, optionally substituted by A 1 such as above defined, or R 2 and R 3 are part of a cycle with 5 or 6 elements optionally comprising another heteroatom such as O or N; n=1-5, with the exclusion of 2H-indol-2-one, 6-bromo-3-[(3E)-1,3-dihydro-3-[[2-(1-pyrrolidinyl)ethoxy]imino]-2H-indol-2-ylidene]˜1,3-dihydro- , (3Z).