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Molecules 2007, 12(8), 2003-2016; doi:10.3390/12082003

Synthesis of Novel Derivatives of 4-Amino-3-(2-Furyl)-5-Mercapto-1,2,4-Triazole as Potential HIV-1 NNRTIs

1
Institute of Medicinal Chemistry, School of Pharmaceutical Sciences, Shandong University, No.44, Wenhuaxi Road, Jinan, 250012, P.R. China
2
Rega Institute for Medical Research, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
*
Author to whom correspondence should be addressed.
Received: 21 July 2007 / Revised: 17 August 2007 / Accepted: 20 August 2007 / Published: 22 August 2007
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Abstract

A series of 5-alkylthio (2a-d), 4-arylideneamino (3a-d) and 4-arylideneamino- 5-alkylthio derivatives (4a-f) of 4-amino-3-(2-furyl)-5-mercapto-1,2,4-triazole (1) were synthesized by alkylation of the parent compound with alkyl halides and condensation with aldehydes, respectively. Sulfanyl dimers 5a-d and 4-iminomethyl dimer 6 were correspondingly prepared by reaction with alkane dibromides and 1,4-diformylbenzene. Mannich base 7 was also synthesized by aminomethylation of the 3-sulfanyltriazole 1 at the N1 position. The newly designed and synthesized substituted s-triazole derivatives were assayed for anti-HIV-1 activity by examination of their inhibition of HIV-1-induced cytopathogenicity in MT-4 cells and by determination of their inhibitory effect on HIV-1 reverse transcriptase. Compound 4e was found to be the most active inhibitor against HIV- 1 replication in cell culture (EC50 = 12 μM) and against HIV-1 reverse transcriptase (IC50 = 43.5 μM), which provided a good lead for further optimization.
Keywords: s-Triazole; Alkylation; Aminomethylation; Synthesis; HIV-1 NNRTIs s-Triazole; Alkylation; Aminomethylation; Synthesis; HIV-1 NNRTIs
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Wu, J.; Liu, X.; Cheng, X.; Cao, Y.; Wang, D.; Li, Z.; Xu, W.; Pannecouque, C.; Witvrouw, M.; De Clercq, E. Synthesis of Novel Derivatives of 4-Amino-3-(2-Furyl)-5-Mercapto-1,2,4-Triazole as Potential HIV-1 NNRTIs. Molecules 2007, 12, 2003-2016.

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