Synthesis and in vitro anticancer activity of some novel cyclohepta[
<i>b</i>
]thiophene‐3‐carboxamides bearing pyrazole moiety
作者:Mohammed Al‐Ghorbani、Moustafa A. Gouda
DOI:10.1002/jhet.4041
日期:2020.8
2‐Aminothiophene 3 was achieved through the one‐pot multicomponent reaction of cycloheptanone, cyanoacetamide, elemental sulfur, and morpholine in ethanol. Diazotization of 2‐aminothiophene 3 with NaNO2/HCl gave the corresponding diazonium salt 4 , that combined with the appropriate active methylene components; 5a , 5b , 7 , 11 , 13 , 16 , 18 , 21 , 9 , 19 , 22a , and 22b in pyridine (AcONa/EtOH) to
2-氨基噻吩3是通过环庚酮,氰基乙酰胺,元素硫和吗啉在乙醇中的单锅多组分反应制得的。用NaNO 2 / HCl将2-氨基噻吩3重氮化,得到相应的重氮盐4,并与适当的活性亚甲基组分合并;图5a,图5b,7,11,13,16,18,21,9,19,22A,和22B中在吡啶(AcONa / EtOH)中以形成相应的腙图6a,6b中,8,10,14,15,17,20,23,24,25A,和25B,分别。将化合物8与丙二腈9在乙醇中加热,得到噻唑10。化合物的治疗10,25A,和25B与水合肼实现吡唑12,27A,和图27b。将化合物14与水合肼水合肼解,然后将所得酰肼15与乙酰丙酮19缩合,得到吡唑20。评估最近精心策划的噻吩的细胞毒性作用。结果表明,化合物12对阿霉素,HCT‐116,MCF‐7和PC3癌细胞的作用与阿霉素相当且更好。