91735-77-2Relevant academic research and scientific papers
Synthesis of 5-Arylpyrrole-2-carboxylic Acids as Key Intermediates for NBD Series HIV-1 Entry Inhibitors
Belov, Dmitry S.,Ivanov, Vladimir N.,Curreli, Francesca,Kurkin, Alexander V.,Altieri, Andrea,Debnath, Asim K.
, p. 3692 - 3699 (2017/08/15)
5-Arylpyrrole-2-carboxylic acids are important key intermediates in the synthesis of HIV-1 entry inhibitors (such as NBD-11021 and NBD-14010). Here we present a general method for the synthesis of some 5-arylpyrrole-2-carboxylic acids in three steps starting from pyrrole. By this method, the compounds could be prepared on gram scale and without chromatographic purification.
Structure-Based Design of a Small Molecule CD4-Antagonist with Broad Spectrum Anti-HIV-1 Activity
Curreli, Francesca,Kwon, Young Do,Zhang, Hongtao,Scacalossi, Daniel,Belov, Dmitry S.,Tikhonov, Artur A.,Andreev, Ivan A.,Altieri, Andrea,Kurkin, Alexander V.,Kwong, Peter D.,Debnath, Asim K.
, p. 6909 - 6927 (2015/09/22)
Earlier we reported the discovery and design of NBD-556 and their analogs which demonstrated their potential as HIV-1 entry inhibitors. However, progress in developing these inhibitors has been stymied by their CD4-agonist properties, an unfavorable trait for use as drug. Here, we demonstrate the successful conversion of a full CD4-agonist (NBD-556) through a partial CD4-agonist (NBD-09027), to a full CD4-antagonist (NBD-11021) by structure-based modification of the critical oxalamide midregion, previously thought to be intolerant of modification. NBD-11021 showed unprecedented neutralization breath for this class of inhibitors, with pan-neutralization against a panel of 56 Env-pseudotyped HIV-1 representing diverse subtypes of clinical isolates (IC50 as low as 270 nM). The cocrystal structure of NBD-11021 complexed to a monomeric HIV-1 gp120 core revealed its detail binding characteristics. The study is expected to provide a framework for further development of NBD series as HIV-1 entry inhibitors for clinical application against AIDS.
Synthesis and optical properties of difluorobora-s-diazaindacene dyes with trifluoromethyl meso-substituents
Sobenina, Lyubov N.,Petrova, Olga V.,Petrushenko, Konstantin B.,Ushakov, Igor A.,Mikhaleva, Albina I.,Meallet-Renault, Rachel,Trofimov, Boris A.
, p. 4107 - 4118 (2013/07/19)
A series of meso-CF3-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) dyes with aryl and hetaryl substituents at the C-3 and C-5 positions, both symmetric and asymmetric, have been synthesized in 36-90 % yields by a new strategy involving as the key step the condensation of 2,2,2-trifluoro-1-(5- arylpyrrol-2-yl)-1-ethanols with diverse 2-arylpyrroles. The starting 2,2,2-trifluoro-1-(5-arylpyrrol-2-yl)-1-ethanols are easily prepared by reduction of the available 2-trifluoroacetyl-5-arylpyrroles. The synthesized dyes fluoresce in a longer wavelength region (626-698 nm) with high quantum yield (0.84-0.99). A new strategy for the synthesis of highly efficient symmetric and asymmetric BODIPY fluorophores that combine trifluoromethyl and 3,5-aryl substituents has been developed. The key step is the P 2O5-promoted condensation of 2,2,2-trifluoro-1-(5- arylpyrrol-2-yl)-1-ethanols with diverse 2-arylpyrroles. Copyright
PYRROLES FROM KETOXIMES AND ACETYLENE. 38. NEW REPRESENTATIVES OF TRIFLUOROACETYLPYRROLES. SYNTHESIS AND TRANSFORMATIONS
Korostova, S. E.,Mikhaleva, A. I.,Sobenina, L. N.,Shevchenko, S. G.,Sigalov, M. V.,et al.
, p. 39 - 43 (2007/10/02)
A series of previously unknown trifluoroacetyl derivatives of pyrroles were obtained with high yields by the reaction of pyrroles, including N-vinyl-substituted pyrroles, with trifluoroacetic anhydride in the presence of pyridine at room temperature.The s
