A new concise and efficient synthetic method of Psammaplin A was developed. Psammaplin A was obtained with 50% overall yield in nine steps from p-hydroxybenzaldehyde and ethyl acetoacetate via Knoevenagel condensation and direct nitrosation as key steps. This method might be very efficient to construct a quite diverse library of Psammaplin A type analogs. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of a novel series of 1,5-benzothiazepine derivatives as potential antimicrobial agents
作者:Lanzhi Wang、Ping Zhang、Xuemei Zhang、Yonghong Zhang、Yuan Li、Yongxiang Wang
DOI:10.1016/j.ejmech.2008.12.021
日期:2009.7
Two series of novel 1,5-benzothiazepine derivatives (23 compounds) were efficiently synthesized and evaluated for antibacterial and antifungal activities. The results indicated that the compounds possessed a broad spectrum of activity against the tested microorganisms and showed higher activity against fungi than bacteria. Compound 2e exhibited the greatest antimicrobial activity. Preliminary study
The beta-ketoesters of formula I are useful as precursors for organoleptic compounds, especially for flavors, fragrances and masking agents and antimicrobial compounds.
A facile synthesis of trisubstituted alkenes from β-diketones and aldehydes with AlCl3 as catalyst
作者:Zheng-Nan Li、Xiao-Liang Chen、Yu-Jie Fu、Wei Wang、Meng Luo
DOI:10.1007/s11164-011-0322-y
日期:2012.1
Preparation of trisubstitutedalkenesfrom low-activity β-diketones and aldehydes with aluminum chloride as catalyst has been studied. The frequently used catalyst AlCl3 is used for the first time to promote this condensation. The procedure is a convenient, low toxicity, and highly efficient method for industrial synthesis of trisubstitutedalkenes in high yield.
Design and Synthesis of 4-Alkyl-2-amino(acetamino)-6-aryl-1,3-thiazine Derivatives as Influenza Neuraminidase Inhibitors
作者:Wan Li、Lin Xia、Aixi Hu、Ailin Liu、Junmei Peng、Weiqing Tan
DOI:10.1002/ardp.201300122
日期:2013.9
With a convenient and economical method, two series of 1,3‐thiazine derivatives 1 and 2 were synthesized, and their neuraminidase (NA) inhibitory activities were evaluated. The pharmacological results showed that most of the compounds have potent NA inhibitory activity. Especially, 1g exhibited the best activity against influenza virus A (H1N1) NA (IC50 = 29.06 µg/mL), and its crystal structure was
Synthesis and biological studies of some new acrylic acid ethyl esters of quinolinone
作者:Rajesh G. Kalkhambkar、G. Aridoss、Geeta M. Kulkarni、R. M. Bapset、J. C. Kadakol、N. Premkumar、Yeon Tae Jeong
DOI:10.1007/s00706-011-0692-2
日期:2012.7
AbstractA series of newacrylic acid ethyl esters of quinolinones were synthesized from 4-(bromomethyl)quinolinones and screened for in vitro antimicrobial and in vivo analgesic and anti-inflammatory activities. Most of the compounds with chloro substitution at the C-6 or C-7 position in the quinolinone moiety and a methoxy group in the aryloxy moiety showed potent antibacterial and antifungal activities
摘要从4-(溴甲基)喹啉酮合成了一系列新的喹啉酮丙烯酸乙酯,并筛选了其体外抗菌和体内止痛和消炎活性。与非卤代喹啉酮和带有CH 3的喹啉酮相比,大多数在喹啉酮部分的C-6或C-7位置具有氯取代基且在芳氧基部分具有甲氧基的化合物具有较强的抗菌和抗真菌活性。在C-8位置 在药理学评估中,与简单的未取代(未卤代)喹啉酮相比,发现喹啉酮中C-6或C-7位置的卤素取代增强了该分子的镇痛和抗炎活性。通过元素分析,IR,1 H NMR,13 C NMR和FAB-MS对所有新合成化合物的结构进行了表征。 图形概要