Synthesis and in vitro evaluation of S-acyl-3-thiopropyl prodrugs of Foscarnet
摘要:
A new enzyme-labile group called S-acyl-3-thiopropyl group (SATP) has been synthesized from allylic esters of phosphonate. After demonstration of the enzyme-labile character of the SATP in cellular extracts, it has been introduced onto the phosphonate moiety of PFA (Foscarnet) to obtain potential lipophilic prodrugs. To ponder the lipophilicity of the triesters of PFA, esters of monomethylether of polyethyleneglycols and of thioglycerol were introduced on the PFA carboxylate moiety. The SATP groups were introduced in an attempt to deliver PFA after bioactivation inside the cells. The PFA prodrugs were evaluated in vitro for their activity against human immunodeficiency viruses (HIV-1 and HIV-2). (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis and in vitro evaluation of S-acyl-3-thiopropyl prodrugs of Foscarnet
作者:Valérie Gagnard、Alain Leydet、Alain Morère、Jean-Louis Montero、Isabelle Lefèbvre、Gilles Gosselin、Christophe Pannecouque、Erick De Clercq
DOI:10.1016/j.bmc.2004.01.017
日期:2004.3
A new enzyme-labile group called S-acyl-3-thiopropyl group (SATP) has been synthesized from allylic esters of phosphonate. After demonstration of the enzyme-labile character of the SATP in cellular extracts, it has been introduced onto the phosphonate moiety of PFA (Foscarnet) to obtain potential lipophilic prodrugs. To ponder the lipophilicity of the triesters of PFA, esters of monomethylether of polyethyleneglycols and of thioglycerol were introduced on the PFA carboxylate moiety. The SATP groups were introduced in an attempt to deliver PFA after bioactivation inside the cells. The PFA prodrugs were evaluated in vitro for their activity against human immunodeficiency viruses (HIV-1 and HIV-2). (C) 2004 Elsevier Ltd. All rights reserved.
Incorporation of a phosphonic acid isostere of aspartic acid into peptides using Fmoc-solid phase synthesis
作者:P.A. Lohse、R. Felber
DOI:10.1016/s0040-4039(98)00189-0
日期:1998.4
A short synthesis of a novel Fmoc-derivative 2b of the phosphonic acid isostere 1 of aspartic acid is presented. Incorporation of 2b into peptides was readily achieved using standard Fmoc-solid phase synthesis. Efficient removal of the allyl protecting groups after sequence assembly under mild conditions using Pd(0) catalysis afforded phosphonopeptides 3a and 3b in high purity.