3-Aroylmethylene-2,3,6,7-tetrahydro-1<i>H</i>-pyrazino[2,1-<i>a</i>]isoquinolin-4(11b<i>H</i>)-ones as Potent Nrf2/ARE Inducers in Human Cancer Cells and AOM-DSS Treated Mice
Nrf2-mediated activation of ARE regulates expression of cytoprotective enzymes against oxidative stress, inflammation, and carcinogenesis. We have discovered a novel structure (1) as an ARE inducer via luciferase reporter assay to screen the in-house database of our laboratory. The potency of 1 was evaluated by the expression of NQO-1, HO-1, and nuclear translocation of Nrf2 in HCT116 cells. In vivo potency of 1 was studied using AOM-DSS models, showing that the development of colorectal adenomas was significantly inhibited. Administration with 1 lowered the expression of IL-6, IL-1 beta, and promoted Nrf2 nuclear translocation. These results indicated that 1 is a potent Nrf2/ARE activator, both in vitro and in vivo. Forty-one derivatives were synthesized for SAR study, and a more potent compound 17 was identified. To our knowledge, this is a potent ARE activator. Besides, its novel structure makes it promising for further optimization.
Use of interphase catalysis in the synthesis of 2-acyl-4-oxopyrazino[2,1-?]isoquinolines and 4-acyl-2-piperazinones
作者:N. L. Sergovskaya、S. A. Chernyak、O. V. Shekhter、Yu. S. Tsizin
DOI:10.1007/bf00472293
日期:1991.8
Synthesis of 3-Aroylmethylene-1,6,7,11b-tetrahydro-2H-pyrazino-[2,1-a]isoquinolin-4-ones
作者:V. L. Gein、N. N. Kasimova、L. I. Varkentin、G. A. Stashina