Retooling Manganese(III) Porphyrin-Based Peroxynitrite Decomposition Catalysts for Selectivity and Oral Activity: A Potential New Strategy for Treating Chronic Pain
摘要:
Redox-active metalloporphyrins represent the most well-characterized class of catalysts capable of attenuating oxidative stress in vivo through the direct interception and decomposition of superoxide and peroxynitrite. While many interesting pharmacological probes have emerged from these studies, few catalysts have been developed with pharmaceutical properties in mind. Herein, we describe our efforts to identify new Mn(III) porphyrin systems with enhanced membrane solubilizing properties. To this end, seven new Mn(III)-tetracyclohexenylporphyin (TCHP) analogues, 7, 10, 12, 15, and 16a-c, have been prepared in which the beta-fused cyclohexenyl rings provide a means to shield the charged metal center from the membrane during passive transport. Compounds 7, 15, and 16a-c have been shown to be orally active and potent analgesics in a model of carrageenan-induced thermal hyperalgesia. In addition, oral administration of compound 7 (10 100 mg/kg, n = 5) has been shown to dose dependently reverse mechano-allodynia in the CCI model of chronic neuropathic pain.
Synthesis, Computational Modeling, and Properties of Benzo-Appended BODIPYs
作者:Timsy Uppal、Xiaoke Hu、Frank R. Fronczek、Stephanie Maschek、Petia Bobadova-Parvanova、M. Graça H. Vicente
DOI:10.1002/chem.201103002
日期:2012.3.26
and dibenzo‐appendedBODIPY dyes were synthesized from a common tetrahydroisoindole precursor following two different synthetic routes. Route A involved the assembly of the BODIPY core prior to aromatization, while in Route B the aromatization step was performed first. In general, Route A gave higher yields of the target dibenzo‐BODIPYs, due to the ease of aromatization of the BODIPYs compared with
作者:Mikhail A. Filatov、Artem Y. Lebedev、Sergei A. Vinogradov、Andrei V. Cheprakov
DOI:10.1021/jo800509k
日期:2008.6.1
A general method of synthesis of 5,15-diaryltetrabenzoporphyrins (Ar(2)TBPs) has been developed, based on 2 + 2 condensation of dipyrromethanes followed by oxidative aromatization. Two pathways to Ar(2)TBPs were investigated: the tetrahydroisoindole pathway and the dihydroisoindole pathway. In the tetrahydroisoindole pathway, precursor 5,15-diaryltetracyclohexenoporphyrins (5,15-Ar(2)TCHPs) were assembled from cyclohexeno-fused meso-unsubstituted dipyrromethanes and aromatic aldehydes or, alternatively, by way of the classical MacDonald synthesis. In the first case, scrambling was observed. Aromatization by tetracyclone was more effective than aromatization by DDQ but failed in the cases of porphyrins with electron-withdrawing substituents in the meso-aryl rings. The dihydroisoindole pathway was found to be much superior to the tetrahydroisoindole pathway, and it was developed into a general preparative method, consisting of (1) the synthesis of 4,7-dihydroisoindole and its transformation into meso-unsubstituted dipyrromethanes, (2) the synthesis of 5,15-diaryloctahydrotetrabenzoporphyrins (5,15-Ar(2)OHTBPs), and (3) their subsequent aromatization by DDQ. Ar2TBP free bases exhibit optical absorption spectra similar to those of meso-unsubstituted tetrabenzoporphyrins and fluoresce with high quantum yields. Pd complex of Ph2TBP was found to be highly phosphorescent at room temperature.
METHOD FOR TREATING CHRONIC PAIN
申请人:Salvemini Daniela
公开号:US20120135973A1
公开(公告)日:2012-05-31
The present invention provides analgesic compounds comprising at least one modified metalloporphyrin compound. Also provided are methods of treating pain by orally administering an analgesic compounds comprising at least one modified metalloporphyrin compound.
[EN] METHOD FOR TREATING CHRONIC PAIN<br/>[FR] PROCÉDÉ DE TRAITEMENT DE LA DOULEUR CHRONIQUE
申请人:SOUTHERN ILLINOIS UNIVERSITY EDWARDSVILLE
公开号:WO2012033916A1
公开(公告)日:2012-03-15
Analgesic compounds comprise at least one modified metalloporphyrin compound. Methods of treating pain by orally administering an analgesic compounds comprise at least one modified metalloporphyrin compound. Orally available peroxynitrite decomposition catalyst (PNDC) compounds are provided that are based on novel modified porphyrin structures. The modifications to the porphyrin structures render the compounds orally available and capable of crossing the blood-brain barrier (BBB), while retaining high PNDC efficacy. Examples of orally available PNDC compounds, methods of producing the PNDC compounds, and methods of using the PNDC compounds to treat chronic pain associated with neuropathic, inflammatory, or other disorders.