Scaffold Hopping of Natural Product Evodiamine: Discovery of a Novel Antitumor Scaffold with Excellent Potency against Colon Cancer
摘要:
Inspired by the natural product evodiamine, a novel antitumor indolopyrazinoquinazolinone scaffold was designed by scaffold hopping. Structure-activity relationship studies led to the discovery of compound 15j, which shows low nanomolar inhibitory activity against the HCT116 cell line. Further antitumor mechanism studies indicated that compound 15j acted by the dual inhibition of topoisomerase 1 and tubulin and induced apoptosis with G2 cell-cycle arrest. The quaternary ammonium salt of compound 15j (compound 15js) exhibited excellent in vivo antitumor activity (TGI = 66.6%) in the HCT116 xenograft model with low toxicity. Indolopyrazinoquinazolinone derivatives represent promising multitargeting antitumor leads for the development of novel antitumor agents.
Synthesis and biological properties of 3-methyl-10-propargyl-5,8-dideazafolic acid
作者:Terence R. Jones、Richard F. Betteridge、David R. Newell、Ann L. Jackman
DOI:10.1002/jhet.5570260548
日期:1989.9
The synthesis of N3-methyl-10-propargyl-5,8-dideazafolic acid (1b) is described. Ringclosure of methyl-5-methylanthranilate with chloroformamidine hydrochloride gave a high yield of pure 2-amino-4-hydroxy-6-methylquinazoline treatment of which with iodomethane/sodium hydroxide provided the corresponding 3-methylquinazoline (6) which was converted to its 2-pivaloylamino derivative. This synthetic approach
Chemo- and Diastereoselective Acylfluorination of Nonactivated Olefins to Access Benzo[<i>b</i>]azepines
作者:Xingfeng Liu、Yuxi Wang、Tao Xu
DOI:10.1021/acs.orglett.2c04082
日期:2023.2.10
Here, we describe a transition-metal-free condition that realized the intramolecular acylfluorination of unactivated olefins. It was designed to access seven-membered-ring-containing benzo[b]annulenones from readily prepared 2-allylamino benzoic acids. The formation of a broad scope of electronically and sterically varied benzo[b]annulenones was demonstrated (>30 examples, up to 88% yield and >20:1
在这里,我们描述了一种无过渡金属的条件,该条件实现了未活化烯烃的分子内酰基氟化。它旨在从易于制备的 2-烯丙基氨基苯甲酸中获取含有七元环的苯并 [ b ] 环烯酮。证明了电子和空间变化范围广泛的苯并 [ b ] 环烯酮的形成(>30 个实例,高达 88% 的产率和 >20:1 的 dr 比率)。机理研究表明,原位形成的 XatlFluor-E 活化酸酐是活性物质,可诱导亲电子 7-内触发环化,随后是阳离子的氟化物捕获。
Design and synthesis of doublecortin-like kinase 1 inhibitors and their bioactivity evaluation
Doublecortin-like kinase1 (DCLK) is a microtubule-associated serine/threonine kinase that is upregulated in a wide range of cancers and is believed to be related to tumour growth and development. ...
Palladium/Copper-Catalyzed Aerobic Oxidative C–H Carbonylation for the Synthesis of <i>o</i>-Aminobenzoates
作者:Wu Li、Zhengli Duan、Ru Jiang、Aiwen Lei
DOI:10.1021/acs.orglett.5b00206
日期:2015.3.20
The palladium/copper-catalyzed aerobic oxidative C-H carbonylation for the synthesis of o-aminobenzoates is described. Molecular oxygen is used as the terminal oxidant. This methodology proceeds with a wide range of N-substituted anilines and alcohols and gives straightforward access to valuable o-aminobenzoates.
JONES, TERENCE R.;BETTERIDGE, RICHARD F.;NEWELL, DAVID R.;JACKMAN, ANN L., J. HETEROCYCL. CHEM., 26,(1989) N, C. 1501-1507
作者:JONES, TERENCE R.、BETTERIDGE, RICHARD F.、NEWELL, DAVID R.、JACKMAN, ANN L.