开发了一种用于制备具有生物学意义的吡啶并稠合喹唑啉酮和吡啶并[1,2- a ]苯并咪唑的无催化剂微波辅助环化方案。该反应涉及各种喹唑啉酮或苯并咪唑与 3-甲酰基色酮的 [3 + 3] 环化,生成官能化的 11 H-吡啶并[ 2,1- b ]喹唑啉-11-酮和吡啶并[1,2- a ]苯并咪唑衍生物。该方法成功地扩展到构建各种吡唑并[4,3 - d ]pyrido[1,2 - a ]pyrimidin-10(1 H)-那些。本方法是对现有合成方法的补充,并提供了一种快速简便的方法,具有广泛的底物范围、良好的收率、无催化剂条件和高官能团耐受性。最佳合成化合物也可用作“开关”光致发光探针,用于选择性检测 Fe 3+和 Ag +金属离子。
Synthesis and biological evaluation of 2-styrylquinazolin-4(3H)-ones, a new class of antimitotic anticancer agents which inhibit tubulin polymerization
摘要:
A novel series of 2-styrylquinazolin-4(3H-ones which inhibited tubulin polymerization and the growth of L1210 murine leukemia cells was discovered. Extensive structure-activity relationship studies suggest that the entire quinazolinone structure was required, but activity was further enhanced by halide or small hydrophobic substituents at position 6. These analogues did not substantially interfere with the binding of radiolabeled colchicine, vinblastine, or GTP to tubulin and weakly stimulated GTP hydrolysis uncoupled from polymerization. Several analogues have shown in vivo tumor growth inhibitory activity in the L1210 leukemia model, with the lead compound 5o exhibiting good antitumor activity against murine solid tumors as well as human tumor xenografts.
A novel and one-pot synthesis of 2-aryl/alkyl-4(3H)-quinazolinones is described. The in situ prepared amidoximes from the reaction between nitriles and hydroxylamine are condensed with anthranilic acidsunder solvent- and catalyst-free conditions to produce the title compounds in excellent yields.
A Direct Method for Synthesis of Quinoxalines and Quinazolinones Using Epoxides as Alkyl Precursor
作者:Xueyan Lv、Lili Lv、Shichen Li、Chengcheng Ding、Bingchuan Yang、Chen Ma
DOI:10.3390/molecules28217391
日期:——
An iodine-mediated one-potsynthesis of pyrrolo/indolo [1,2-a]quinoxalines and quinazolin-4-one via utilizing epoxides as alkyl precursors under metal-free conditions has been described. Both 1-(2-aminophenyl)-pyrrole and 2-aminobenzamide could be applied to this protocol. A total of 33 desired products were obtained with moderate to good yields. This methodology was suitable for wide-scale preparation