Novel isoquinoline derivatives as antimicrobial agents

被引:52
作者
Galan, Abraham [1 ]
Moreno, Laura [1 ]
Parraga, Javier [1 ]
Serrano, Angel [1 ]
Jesus Sanz, Ma [2 ,3 ]
Cortes, Diego [1 ]
Cabedo, Nuria [4 ]
机构
[1] Univ Valencia, Fac Farm, Dept Farmacol, Lab Farmacoquim, Valencia 46100, Spain
[2] Univ Valencia, Fac Med, Dept Farmacol, Valencia 46013, Spain
[3] Univ Clin Hosp Valencia, Inst Hlth Res INCLIVA, Valencia, Spain
[4] Univ Politecn Valencia, Ctr Ecol Quim Agr, Inst Agroforestal Mediterraneo, Valencia 46022, Spain
关键词
Esters and carbamates 1-alkyl-isoquinolines; Bactericide; Fungicide; ACTIVITIES IN-VITRO; ANTIFUNGAL; ANTIBACTERIAL; ANTIBIOTICS; INHIBITORS; ALKALOIDS;
D O I
10.1016/j.bmc.2013.03.042
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The wide variety of potent biological activities of natural and synthetic isoquinoline alkaloids encouraged us to develop novel antimicrobial isoquinoline compounds. We synthesized a variety of differently functionalized 1-pentyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolines (THIQs), including dihydroisoquinolinium salts (2 and 5), methyl pentanoate-THIQ (6), 1-pentanol-THIQ (7), ester derivatives (8-15) and carbamate derivatives (16-23). We employed classic intramolecular Bischler-Napieralski cyclodehydration to generate the isoquinoline core. All the structures were characterized by nuclear magnetic resonance and mass spectrometry. The bactericide and fungicide activities were evaluated for all the synthesized compounds and structure-activity relationships were established. Many compounds exhibited high and broad-range bactericidal activity. Fluorophenylpropanoate ester 13 and the halogenated phenyl-(17, 18) and phenethyl carbamates (21, 22) exerted the most remarkable bactericidal activity. However, few compounds displayed antifungal activity against most of the fungi tested. Among them, chlorinated derivatives like chlorobenzoate and chlorophenylpropanoate esters (10 and 14, respectively) and chlorophenethyl carbamate 22, exhibited the greatest antifungal activity. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3221 / 3230
页数:10
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