目标络合物bis {(E,E)-3,5-二[4-(二乙氨基)亚苄基] -4-氧代哌啶鎓}丁二酸酯,2C 27 H 36 N 3 O + ·C 4 H 4 O 4 2-, (II)和双{(E,E)-3,5-双[4-(二乙氨基)亚苄基] -4-氧代哌啶鎓}癸二酸盐,2C 27 H 36 N 3 O + ·C 10 H 16 O 4 2-,(III)是通过溶剂介导的药物活性成分(API)的结晶而获得的(E,E)-3,5-双[4-(二乙氨基)亚苄基] -4-哌啶酮和药学上可接受的二羧酸(琥珀酸和癸二酸)溶液。它们的特征在于熔点,红外光谱和单晶X射线衍射。为便于比较,起始原料药的结构为(E,E)-3,5-双[4-(二乙氨基)亚苄基] -4-哌啶酮甲醇单溶剂化物,C 27 H 35 N 3 O·CH 4O(I)也已经研究过。化合物(II)和(III)代表含有H型中心对称氢键合子的盐,它们是由两个平行的
Synthesis, cytotoxicity, and structure–activity insight of NH- and N-methyl-3,5-bis-(arylidenyl)-4-piperidones
摘要:
Twenty-one NH- and N-methyl-3,5-bis-(arylidenyl)-4-piperidone analogs of curcumin, 12 of which are novel, were synthesized and evaluated for their cytotoxicity against B16 (murine melanoma) and L1210 (murine lymphoma) cells grown in culture. These curcumin analogs are related to a known anticancer STAT3 inhibitor 3,5-bis-(4-fluorobenzyl)-4-piperidone (3). The compounds showed remarkable cytotoxicity, especially against B16 cells. The dimethoxy substituted analogs 4e and 4f and dihydroxy analog 4i emerged as the most active compounds with IC50 values in the range of 0.2-2.3 mu M. 4e, f, and i were about 10-times more cytotoxic against both cell lines than 3. Analysis of the results demonstrates that the position of the hydroxyl group is crucial for cytotoxicity. Amino-containing analogs are generally less active than their halogenated and oxygen-containing analogs, and N-substitution in the 4-piperidone moiety adds value to the cytotoxicity of the compounds.