Tipranavir analogous 3-sulfonylanilidotetronic acids: new synthesis and structure-dependent anti-HIV activity
摘要:
Sulfonamide-containing tetronic acids 1, structural analogues of the HIV-1 protease inhibitor tipranavir, were synthesised in five steps including a microwave-assisted Claisen rearrangement of cinnamyl tetronates and a modified Charette cyclopropanation of the so-formed 3-allyltetronic acids. Compounds 1 with two non-H residues (R-1, R-2) at C-5 of the tetronate core exhibited structure-dependent antiviral activity in two HIV strains. Derivatives 1c (R-1=R-2=Me, R-3=Cl) and 1d (R-1,R-2=(CH2)(5,) R-3=Me) were most active (IC50<10 mu M) in the sensitive strain HIVNL4-3. (C) 2008 Elsevier Ltd. All rights reserved.
Tipranavir analogous 3-sulfonylanilidotetronic acids: new synthesis and structure-dependent anti-HIV activity
摘要:
Sulfonamide-containing tetronic acids 1, structural analogues of the HIV-1 protease inhibitor tipranavir, were synthesised in five steps including a microwave-assisted Claisen rearrangement of cinnamyl tetronates and a modified Charette cyclopropanation of the so-formed 3-allyltetronic acids. Compounds 1 with two non-H residues (R-1, R-2) at C-5 of the tetronate core exhibited structure-dependent antiviral activity in two HIV strains. Derivatives 1c (R-1=R-2=Me, R-3=Cl) and 1d (R-1,R-2=(CH2)(5,) R-3=Me) were most active (IC50<10 mu M) in the sensitive strain HIVNL4-3. (C) 2008 Elsevier Ltd. All rights reserved.
Microwave-accelerated Claisen rearrangements of allyl tetronates and tetramates
作者:Rainer Schobert、Gary J. Gordon、Gillian Mullen、Ralf Stehle
DOI:10.1016/j.tetlet.2003.12.024
日期:2004.2
[3,3]-Sigmatropic rearrangements of allyltetronates and allyl tetramates to give 3-allyltetronic or -tetramic acids, respectively, proceed within 20–60 min under microwave irradiation (300 W, 130–190 °C). Consecutive (homo)sigmatropic [1,5] H-shifts such as oxa-ene reactions are promoted less effectively, which allows the isolation of Claisen intermediates of sigmatropic domino sequences, in contrast