Novel 2H-pyrazolo[4,3-c]hexahydropyridine derivatives: Synthesis, crystal structure, fluorescence properties and cytotoxicity evaluation against human breast cancer cells
作者:ChunCheng Pang、ChuanWen Sun、Jing Wang、Di Xiao、Li Ding、HongFei Bu
DOI:10.1007/s11426-013-4840-x
日期:2013.6
A series of novel 2H-pyrazolo[4,3-c]hexahydropyridine derivatives (II) have been designed and synthesized. The target compounds have been identified by elemental analysis and spectral (1H NMR, IR, and MS) data and the absolute configuration of compound (II 1 ) was confirmed by single crystal X-ray diffraction. The cytotoxicity of the target compounds have been evaluated in vitro against two human breast cancer cell lines MCF-7 and MDA-MB-231 by MTT assay. Most compounds exhibited good inhibition, and compounds II 21 (IC50 = 4.7 μM for MCF-7 and IC50 = 9.3 μM for MDA-MB-231), II 33 (IC50 = 2.4 μM for MCF-7 and IC50 = 4.2 μM for MDA-MB-231) and II 40 (IC50 = 3.3 μM for MCF-7 and IC50 =8.6 μM for MDA-MB-231) displayed better inhibitory activity than 5-fluorouracil (IC50 = 4.8 μM for MCF-7 and IC50 = 9.6 μM for MDA-MB-231, respectively). Flow cytometric analysis and DNA fragmentation suggest that II 33 is cytotoxic and able to induce the apoptosis of MCF-7 cells. The fluorescence properties of compounds II 1 , II 6 , II 11 , II 16 , II 23 , II 28 , and II 35 were also studied and compound II 28 afforded the highest photoluminescence quantum yield (38%).
一系列新型2H-吡唑[4,3-c]六氢吡啶衍生物(II)已被设计和合成。目标化合物通过元素分析和光谱(1H NMR、IR和MS)数据得到确认,化合物(II 1)的绝对构型通过单晶X射线衍射法得以确认。对目标化合物在体外针对两个人乳腺癌细胞株MCF-7和MDA-MB-231进行了MTT法评估其细胞毒性。大多数化合物表现出良好的抑制作用,其中化合物II 21(对MCF-7的IC50为4.7 μM,對MDA-MB-231的IC50为9.3 μM)、II 33(对MCF-7的IC50为2.4 μM,對MDA-MB-231的IC50为4.2 μM)和II 40(对MCF-7的IC50为3.3 μM,對MDA-MB-231的IC50为8.6 μM)显示出比5-氟尿嘧啶(对MCF-7的IC50为4.8 μM,對MDA-MB-231的IC50为9.6 μM)更好的抑制活性。流式细胞仪分析和DNA片段化结果表明,II 33具有细胞毒性,并能诱导MCF-7细胞的凋亡。还研究了化合物II 1、II 6、II 11、II 16、II 23、II 28和II 35的荧光特性,其中化合物II 28的光致发光量子产率最高(38%)。