Di Braccio; Roma; Leoncini, Il Farmaco, 1995, vol. 50, # 10, p. 703 - 711
作者:Di Braccio、Roma、Leoncini、Poggi
DOI:——
日期:——
Pyran derivatives XX. 2-Aminochromone benzo-fused derivatives with antiproliferative properties
作者:Giorgio Roma、Mario Di Braccio、Giancarlo Grossi、Cristina Marzano、Morena Simonato、Franco Bordin
DOI:10.1016/s0014-827x(98)00055-x
日期:1998.7
The N-substituted 2-aminochromones 1 and their benzo-fused derivatives 2-4 described herein were mostly prepared by treating the corresponding (methylthio) derivatives 10-13 with an excess of the proper amines. Only the morpholino derivatives 3d and 4c were obtained from the reaction of the ethyl 3-morpholino-3-oxopropanoate/POCl3 reagent with 1-naphthol or 1-methyl-2-naphthol, respectively. The amino derivatives 1-4, as well as their methylthio analogues 10-13, were tested in vitro for their inhibitory activity on the infectivity of T2 bacteriophage, on the macromolecular synthesis in Ehrlich cells and on the clonal growth capacity of HeLa cells. Several of the angular or linear aminonaphthopyranones 2 and 3 or 4, respectively, and the (methylthio) derivatives 10, 11 and 13 induced a significant inhibition of DNA synthesis, but usually a clearly lower inhibition of clonal growth. Only the Linear 2-amino-10-methyl-4H-naphtho [2,3-b]pyran-4-ones 4a and 4b significantly inhibited the clonal growth in HeLa cells and T2 bacteriophage infectivity, respectively. (C) 1998 Elsevier Science S.A. All rights reserved.
Definition of the heterocyclic pharmacophore of bacterial methionyl tRNA synthetase inhibitors: potent antibacterially active non-quinolone analogues
作者:Richard L Jarvest、Sula A Armstrong、John M Berge、Pamela Brown、John S Elder、Murray J Brown、Royston C.B Copley、Andrew K Forrest、Dieter W Hamprecht、Peter J O'Hanlon、Darren J Mitchell、Stephen Rittenhouse、David R Witty
DOI:10.1016/j.bmcl.2004.05.070
日期:2004.8
Potent inhibitors of bacterial methionyl tRNA synthetase (MRS) have previously been reported. Through SAR of the quinolone moiety, the right hand side pharmacophore for MRS inhibition has now been defined as an NH-C-NH functionality in the context of a bicyclic heteroaromatic system. Potent antibacterial fused-pyrimidone and fused-imidazole analogues have been obtained and enantioselective activity demonstrated. Compound 46 demonstrated very good antibacterial activity against panels of antibiotic-resistant staphylococci and enterococci. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis of 2-Methylthio-4<i>H</i>-4-chromenones via Ketene Dithioacetal in the One-Pot Reaction
作者:Ge Hyeong Lee、Chwang Siek Pak
DOI:10.1080/00397919908086262
日期:1999.7
2-Methylthio-4H-4-chromenone which is key intermediate for the synthesis of 2-methylsulfonyl-4H-4-chromenone, equivalent to 2-halo-4H-4-chromenone, was very easily and efficiently synthesized from 2'-hydroxyacetophenone analogues via ketene dithioacetal in the one-pot reaction.
Synthesis and Characterization of 2-Methylsulfonyl-4<i>H</i>-4-Chromenones
作者:Ge Hyeong Lee、Sung Jin Ha、Chwang Siek Pak
DOI:10.1080/00397919908086429
日期:1999.8.1
2-Methylsulfonyl-4H-4-chromenones which are important intermediate of 2-substituted 4H-4-chromenones, equivalent to 2-halo-4H-4-chromenone, were synthesized and first characterized.