Antimalarial Activity of Natural and Synthetic Prodiginines
作者:Kancharla Papireddy、Martin Smilkstein、Jane Xu Kelly、Shweta、Shaimaa M. Salem、Mamoun Alhamadsheh、Stuart W. Haynes、Gregory L. Challis、Kevin A. Reynolds
DOI:10.1021/jm200543y
日期:2011.8.11
Prodiginines are a family of linear and cyclic oligopyrrole red-pigmented compounds. Herein we describe the in vitro antimalarial activity of four natural (IC50 = 1.7–8.0 nM) and three sets of synthetic prodiginines against Plasmodium falciparum. Set 1 compounds replaced the terminal nonalkylated pyrrole ring of natural prodiginines and had diminished activity (IC50 > 2920 nM). Set 2 and set 3 prodiginines
Investigating Alkylated Prodigiosenes and Their Cu(II)‐Dependent Biological Activity: Interactions with DNA, Antimicrobial and Photoinduced Anticancer Activity
synthetic analogs of the natural product prodigiosin, exhibit self-activated DNA cleavage in the presence of Cu(II). In unprecedented Cu(II)-dependent cytotoxicity studies, we investigated the role of different alkyl chains at the C ring. Cytotoxicity was selective towards cancer cells and could be increased by irradiation. Some prodigiosenes also showed high antibacterial activity.
[EN] ADDUCT BETWEEN A PYRROLIC COMPOUND AND AN INORGANIC OXIDE HYDROXIDE, A SUPER-ADDUCT BETWEEN A PYRROLIC COMPOUND, AN INORGANIC OXIDE HYDROXIDE AND A CARBON ALLOTROPE, ELASTOMERIC COMPOSITION COMPRISING THE SUPER-ADDUCT AND METHODS FOR PRODUCING THE SAME<br/>[FR] PRODUIT D'ADDITION ENTRE UN COMPOSÉ PYRROLIQUE ET UN HYDROXYDE D'OXYDE INORGANIQUE, UN SUPER-PRODUIT D'ADDITION ENTRE UN COMPOSÉ PYRROLIQUE, UN HYDROXYDE D'OXYDE INORGANIQUE ET UN ALLOTROPE DE CARBONE, COMPOSITION ÉLASTOMÈRE COMPRENANT LE SUPER-PRODUIT D'ADDITION ET LEURS PROCÉDÉS DE PRODUCTION
申请人:PIRELLI
公开号:WO2019162873A1
公开(公告)日:2019-08-29
Adduct obtainable by interacting: a. a pyrrolic compound of general formula (I) wherein the significance of the substituents is specified in the description and in the claims, and b. an inorganic oxide hydroxide, comprising an oxide and/or a hydroxide, wherein the ratio between the weight of said inorganic oxide hydroxide and said pyrrolic compound is greater than or equal to 10.
[EN] ADDUCTS OF PYRROLE DERIVATIVES TO CARBON ALLOTROPES<br/>[FR] PRODUITS D'ADDITION DE DÉRIVÉS DE PYRROLE À DES ALLOTROPES DE CARBONE
申请人:PIRELLI
公开号:WO2018087685A1
公开(公告)日:2018-05-17
Adducts are described formed between pyrrole derivatives of formula (I) an carbon allotropes in which the carbon is sp2 hybridized, such as for example carbon nanotubes, graphene or nanographites, carbon black. The pyrrole derivatives bear substituents on the nitrogen atom suitable for improving the physicochemical characteristics of said allotropes. A process for preparing said adducts is also described. The adducts are formed with a pyrrole of formula (I) wherein X is selected from the group consisting of : The other substituents are as defined in the claims.
Substituted pyrroles were prepared by a gold(I)-catalyzed acetylenic Schmidt reaction of homopropargyl azides. The reaction allows for regiospecific substitution at each position of the pyrrole ring under mild conditions. A mechanism in which azides serve as nucleophiles toward gold(I)-activated alkynes with subsequent gold(I)-aided expulsion of dinitrogen is proposed.