| abstract |
Certain N-deacetylcolchicine and N-deacetylthiocolchine derivatives are described wherein the 7-N position on the B ring is substituted with the group —C(O)—(CHR 4 ) m -AR, wherein m is an integer of 0-10, A is S, O, N or a covalent bond; R 1 is substituted phenyl or substituted benzoyl; optionally substituted cycloalkyl of 3-7 carbons; optionally substituted naphtyl; an optionally substituted imide ring; an optionally substituted 5 or 6 member heterocycle with at least one N, S, or O in the ring; or an optionally substituted fused heterocyclic or fused carboxyclic ring system; R 2 (at the 2 -position of the A ring) is methoxy, hydroxy, or methylenedioxy when taken together with R 3 ; R 3 (at the 3 -position of the A ring) is methoxy, hydroxy, a monosaccharide radical, or is methylenedioxy when taken together with R 2 ; and R 4 is H or is H or methyl when m is 1. Also dimers of such compounds are disclosed. When combined with suitable pharmaceutical excipients, these compounds are useful for treating various types of cancer. |