98596-13-5Relevant articles and documents
Transannulation of Pyridotriazoles with Naphthoquinones and Indoles: Synthesis of Benzo[f]Pyrido[1,2-a]Indoles and Indolizino[3,2-b]indoles
Rawat, Deepa,Adimurthy, Subbarayappa
, p. 71 - 76 (2021/10/29)
Ruthenium catalysed denitrogenative transannulation of pyridotriazoles with naphthoquinones provided the transannulated benzo[f]pyrido[1,2-a]indoles derivatives in good to excellent yields. While pyridotriazoles with indoles in presence of PivOH and oxone yield indolizino[3,2-b]indoles under metal-free conditions. Quinone annulation proceeds through ruthenium-carbenoid intermediate while indole annulation may proceed via a diazo-pyridinium intermediate. Control experiments suggest that both the transformations follow the ionic mechanism. (Figure presented.).
Design, synthesis and structure-activity relationship study of novel naphthoindolizine and indolizinoquinoline-5,12-dione derivatives as IDO1 inhibitors
Yang, Rui,Chen, Yu,Pan, Liangkun,Yang, Yanyan,Zheng, Qiang,Hu, Yue,Wang, Yuxi,Zhang, Liangren,Sun, Yang,Li, Zhongjun,Meng, Xiangbao
, p. 4886 - 4897 (2018/09/11)
Indoleamine 2,3-dioxygenase 1 (IDO1) is regarded as a promising target for cancer immunotherapy. Many naphthoquinone derivatives have been reported as IDO1 inhibitors so far. Herein, two series of naphthoquinone derivatives, naphthoindolizine and indolizinoquinoline-5,12-dione derivatives, were synthesized and evaluated for their IDO1 inhibitory activity. Most of the target compounds showed significant inhibition potency and high selectivity for IDO1 over tryptophan 2,3-dioxygenase (TDO). The structure-activity relationship was also summarized. The most potent compounds 5c (IC50 23 nM, IDO1 enzyme), and 5b′ (IC50 372 nM, HeLa cell) were identified as promising lead compounds.
Copper(II)-catalyzed synthesis of benzo[ f ]pyrido[1,2- a ]indole-6,11-dione derivatives via naphthoquinone difunctionalization reaction
Liu, Yun,Sun, Jin-Wei
scheme or table, p. 1191 - 1197 (2012/03/11)
Benzo[f]pyrido[1,2-a]indole-6,11-diones have been synthesized in high yields by copper(II)-catalyzed three-component reactions of acyl bromide, 1,4-naphthoquinone, and pyridine (or isoquinoline) via sp2-C-H difunctionalization of naphthoquinone