一系列新颖的四环吡啶酮羧酸取代了9,1-(环氧甲氧基)-7-氟-8-(4-甲基-1-哌嗪基)-5-氧代-5H-噻唑的10位氧原子[3,制备亚氨基(NR; R = Me,Et,c-Pr,烯丙基,Ph,苄基),硫原子或羰基的2-α喹啉-4-羧酸,并评价其抗菌活性和抑制性分离自大肠杆菌KL-16的DNA促旋酶的活性。发现其体外抗菌能力和DNA促旋酶抑制活性的顺序如下:NMe>或= O> S >> C =O。而且,对于10位氮原子,甲基是最佳的烷基取代基抗菌活性和对DNA促旋酶的抑制活性。7-氟-9,1-[[(N-甲基亚氨基)甲醇] -8-(4-甲基-1-哌嗪基)-5-氧代-5H-噻唑啉[3,
An automated, polymer-assisted strategy for the preparation of urea and thiourea derivatives of 15-membered azalides as potential antimalarial chemotherapeutics
series of 15-membered azalide urea and thiourea derivatives has been synthesized and evaluated for their in vitro antimalarial activity against chloroquine-sensitive (D6), chloroquine/pyremethamine resistant (W2) and multidrug resistant (TM91C235) strains of Plasmodium falciparum. We have developed an effective automated synthetic strategy for the rapid synthesis of urea/thiourea libraries of a macrolide
efficient method for the conversion of alkyl and arylamines to isothiocyanates via dithiocarbamates has been developed using (CH3)2CO-CS2 as co-solvent and triphosgene as dehydrosulfurization reagent. High yields, mild reaction conditions and excellent functional group compatibility make it become a versatile synthetic method for the preparation of isothiocyanates compared with reported methods. [Supplementary
Pharmacomodulations of the benzoyl-thiosemicarbazide scaffold reveal antimicrobial agents targeting d-alanyl-d-alanine ligase in bacterio
作者:Alice Ameryckx、Lionel Pochet、Gang Wang、Esra Yildiz、Bouazza Es Saadi、Johan Wouters、Françoise Van Bambeke、Raphaël Frédérick
DOI:10.1016/j.ejmech.2020.112444
日期:2020.8
scaffold to identify new Ddl inhibitors with antibacterial potency. Five novel series of thiosemicarbazide analogues, 1,2,4-thiotriazole-3-thiones, 1,3,4-thiadiazoles, phenylthiosemicarbazones, diacylthiosemicarbazides and thioureas were synthesized via straightforward procedures, then tested against Ddl and on susceptible or resistant bacterial strains. Among these, the thiosemicarbazone and thiotriazole
d -Alanyl- d丙氨酸连接酶(DDL)是参与肽聚糖生物合成的细菌酶中的验证和有吸引力的目标。在目前的工作中,我们调查了苯甲酰基硫代氨基脲骨架的药物调节,以鉴定具有抗菌效力的新型Ddl抑制剂。通过简单的方法合成了五个新系列的硫代氨基脲类似物1,2,4-硫代三唑-3-硫酮,1,3,4-噻二唑,苯基硫代氨基脲,二酰基硫代氨基脲和硫脲,然后针对Ddl以及易感或耐药细菌菌株进行了测试。在这些当中,硫半脲和硫代三唑被认为是最有前途的支架,其在微摩尔范围内具有Ddl抑制能力。水杨醛-4(N)-(3,4-二氯苯基)硫半脲33是我们研究中最好的化合物之一,对VRE菌株的抗菌活性为3.12–6.25μM(1.06–2.12μg/ mL),而对VRE菌株的抗菌活性为12.5–25.0μM(4.25) –8.50μg/ mL),针对MRSA和VRSA菌株。对Ddl抑制剂4-(3,4-二氯苯基)-5-(2-羟苯基)-2
Pyrazolopyrimidines: Potent Inhibitors Targeting the Capsid of Rhino- and Enteroviruses
作者:Vadim A. Makarov、Heike Braun、Martina Richter、Olga B. Riabova、Johannes Kirchmair、Elena S. Kazakova、Nora Seidel、Peter Wutzler、Michaela Schmidtke
DOI:10.1002/cmdc.201500304
日期:2015.10
characterization of pyrazolopyrimidines, a well‐tolerated and potent class of novel EV inhibitors. The compounds inhibit the replication of a broad spectrum of EV in vitro with IC50 values between 0.04 and 0.64 μM for viruses resistant to pleconaril, a known capsid‐binding inhibitor, without affecting cytochrome P450 enzyme activity. Using virological and genetics methods, the viral capsid was identified
当前尚无可用于治疗由肠病毒(EV)引起的急性和慢性疾病的药物,例如普通感冒,脑膜炎,脑炎,肺炎和心肌炎,伴或不伴连续性扩张性心肌病。在这里,我们报告吡唑并嘧啶的发现和表征,吡唑并嘧啶是一类耐受性强且有效的新型EV抑制剂。化合物抑制EV的体外广谱与IC的复制50值之间的0.04和0.64μ中号适用于对pleconaril(一种已知的衣壳结合抑制剂)有抗性的病毒,而不会影响细胞色素P450酶的活性。使用病毒学和遗传学方法,病毒衣壳被确定为最有希望的,口服生物利用的化合物3-(4-三氟甲基苯基)氨基-6-苯基吡唑并[3,4- d ]嘧啶-4-胺(OBR-5 )的靶标-340)。柯萨奇病毒B3引起的小鼠慢性心肌炎的预防性和治疗性应用都得到了证明。小鼠体内良好的药代动力学,毒理学和药效学特征使OBR-5340成为高度有前途的候选药物,并且正在进行非临床监管计划。
A FACILE SYNTHESIS OF ARYL ISOTHIOCYANATES FROM ARYLAMINES
作者:Zhibin Li、Xuhong Qian、Zhi Liu、Zhong Li、Gonghua Song
DOI:10.1080/00304940009355953
日期:2000.12
the isothiocyanate.” We now report a more straightforward and convenient synthesis of arylisothiocyanates from arylamines on the basis of Kaluza method as shown in the following equation. Arylamines (la-I) readily reacted with carbondisulfide and sodium hydroxide in water to give sodium aryldithiocarbamates (2a-I), which were treated directly with ethyl chloroformate at 35-40” to give aryl isothiocyanates