A series of fused bicyclic 2-aminothiazolyl compounds were synthesized and evaluated for their synergistic effects with polymyxin B (PB) against Klebsiella pneumoniae (SIPI-KPN-1712).
N, N′, N″-trisubstituted guanidines: Synthesis, characterization and evaluation of their leishmanicidal activity
作者:Rafael Dias do Espírito Santo、Ángela María Arenas Velásquez、Luana Vitorino Gushiken Passianoto、Alex Arbey Lopera Sepulveda、Leandro da Costa Clementino、Renata Pires Assis、Amanda Martins Baviera、Predrag Kalaba、Fábio Neves dos Santos、Marcos Nogueira Éberlin、Gil Valdo José da Silva、Martin Zehl、Gert Lubec、Márcia Aparecida Silva Graminha、Eduardo René Pérez González
DOI:10.1016/j.ejmech.2019.03.032
日期:2019.6
efficacy, the latter mainly due to the emergence of drug-resistant parasites, which makes discovery of novel, safe, and efficacious antileishmanial drugs mandatory. The present work reports the synthesis, characterization by ESI-MS, 1H and 13C NMR, and FTIR techniques as well as in vitro and in vivo evaluation of leishmanicidal activity of guanidines derivatives presenting lower toxicity. Among ten investigated
利什曼病是一组从该属引起的原生动物寄生虫疾病利什曼原虫。如果不及时治疗,每年估计有130万新病例,每年的死亡率为20,000-30,000。当前可用的化学治疗药物具有高毒性和低功效,后者主要归因于耐药性寄生虫的出现,这使得发现新颖,安全和有效的抗衰老药物成为必不可少的。本工作报告了ESI-MS,1 H和13 C NMR和FTIR技术以及体外和体内的合成,表征评估具有较低毒性的胍衍生物的杀菌活性。在十种被研究的化合物中,所有都是含有苯甲酰基,苄基和取代的苯基部分的胍,LQOF-G2(IC 50-ama 5.6μM ; SI = 131.8)和LQOF-G7(IC 50-ama 7.1μM ; SI = 87.1)对马氏乳杆菌胞内鞭毛虫最有活性,根据它们的选择性指数,对宿主细胞显示出低细胞毒性。最有希望的化合物LQOF-G2在体内得到了进一步评估并能以0.25 mg / kg /天的剂量减少足
Structural requirement(s) of N-phenylthioureas and benzaldehyde thiosemicarbazones as inhibitors of melanogenesis in melanoma B 16 cells
作者:P. Thanigaimalai、Tuan Anh Le Hoang、Ki-Cheul Lee、Seong-Cheol Bang、Vinay K. Sharma、Cheong-Yong Yun、Eunmiri Roh、Bang-Yeon Hwang、Youngsoo Kim、Sang-Hun Jung
DOI:10.1016/j.bmcl.2010.02.067
日期:2010.5
In order to define the structural requirements of phenylthiourea (PTU), a series of thiourea and thiosemicarbazone analogs were prepared and evaluated as inhibitors of melanogenesis in melanoma B16 cells. The most potent analog was 2-(4-tert-butylbenzylidene)hydrazinecarbothioamide (1u) with an IC50 value of 2.7 mu M in inhibition of melanogenesis. The structure for potent inhibitory activity of these derivatives are required with the direct connection of pi-planar structure to thiourea without steric hinderance in PTU derivatives and the hydrophobic substituent at para position in case of semicarbazones. (C) 2010 Published by Elsevier Ltd.
In vitro evaluation of antitrypanosomal activity and molecular docking of benzoylthioureas
作者:Patricia M.L. Pereira、Priscila G. Camargo、Bruna T. Fernandes、Luiz A.P. Flores-Junior、Luiza R.S. Dias、Camilo H.S. Lima、Phileno Pinge-Filho、Lucy M.Y. Lioni、Sueli F. Yamada-Ogatta、Marcelle L.F. Bispo、Fernando Macedo Jr