申请人:The Provost, Fellows, Foundation Scholars, & the other Members of Board, of the College of the Holy
公开号:US20150018566A1
公开(公告)日:2015-01-15
The invention provides combretastatin A-4 like compounds that are modified to have enhanced tubulin binding activity and in some embodiments the ability to promote accumulation in the vasculature undergoing angiogenesis (homing activity). The compounds are based on the combretastatin A-4 skeletal structure having a tubulin-binding pharmacophore comprising two fused rings (A and B rings) in which the B ring is substituted with (a) an aromatic ring structure (C ring) and (b) a second substituent/functional group that comes off the B ring. The aromatic ring structure is typically a six membered ring phenolic or aniline structure, or may also be a fused ring structure such as a substituted or unsubstituted naphthalene. The second substituent on the B ring may for example be a substituent which has been found to provide enhanced tubulin binding activity (for example a carbonyl group), or may be a substituent that facilitates functionalisation of the B ring (for example an hydroxyl or amine group), or it may be a binding agent for a target that is preferentially expressed on vasculature undergoing angiogenesis, and not expressed on quiescent vasculature.
该发明提供了类似于康柏他定A-4的化合物,经过改良以增强微管结合活性,在某些实施例中还具有促进在进行血管生成的血管系统中积聚(归巢活性)的能力。这些化合物基于康柏他定A-4的骨架结构,其具有一个微管结合药效团,包括两个融合环(A环和B环),其中B环被取代为(a)芳香环结构(C环)和(b)从B环上脱落的第二取代基/官能团。芳香环结构通常是一个六元环酚或苯胺结构,也可以是一个融合环结构,如取代或未取代的萘。B环上的第二取代基可以是已知可提供增强微管结合活性的取代基(例如酰基),也可以是促进B环官能化的取代基(例如羟基或胺基),或者可以是一种针对在进行血管生成的血管系统上优先表达而在静止血管系统上不表达的靶标的结合剂。