N,N'-(phenylene)dioxamic acids and their esters as antiallergy agents
摘要:
A series of dialkyl N,N'-(m-phenylene)dioxamates was synthesized by treatment of the requisite m-phenylenediamines with an alkyloxalyl chloride in the presence of triethylamine. Hydrolysis with sodium hydroxide solution gave the corresponding N,N'-(m-phenylene)dioxamic acids. Several N,N'-(p-phenylene)dioxamic acids were synthesized also in the same manner starting with the requisite p-phenylenediamines. These compounds were tested in the rat passive cutaneous anaphylaxis (PCA) assay. When tested iv, activity was found in the N,N'-(m-phenylene) dioxamic acids up to 2500 times that shown by disodium cromoglycate [50% inhibition at 0.001 mg/kg for N,N'-(2-chloro-5-cyano-m-phenylene)dioxamic acid (compound 61)]. Oral activity was seen in this series of compounds with duration of activity up to 120 min. Oral activity was detected in diethyl N,N'-(2-chloro-5-cyano-m-phenylene)dioxamate (compound 38) at levels of drug as low as 0.1 mg/kg.
Compounds represented below ##SPC1## And pharmaceutical compositions thereof, the compositions including the non-substituted phenylene dioxamates are useful in the prophylactic treatment of sensitized mammals for allergy and all anaphylactic reactions of a reagin or non-reagin mediated nature.
Polymorphic Derivatives of Ni<sup>II</sup> and Co<sup>II</sup> Mesocates with 3D Networks and “Brick and Mortar” Structures: Preparation, Structural Characterization, and Cryomagnetic Investigation of New Single-Molecule Magnets
作者:Ludmila dos S. Mariano、Iara M. L. Rosa、Nathália R. De Campos、Antônio C. Doriguetto、Danielle F. Dias、Walace D. do Pim、Ana Karoline S. M. Valdo、Felipe T. Martins、Marcos A. Ribeiro、Elgte E. B. De Paula、Emerson F. Pedroso、Humberto O. Stumpf、Joan Cano、Francesc Lloret、Miguel Julve、Maria Vanda Marinho
DOI:10.1021/acs.cgd.9b01638
日期:2020.4.1
[M(tppz)2]2+ and the “mortar” refers to water molecules, where the electroneutrality of the motif is achieved by the [M(tppz)2]2+ cationic complex. The dc magnetic data for 1–4 in the temperature range 1.9–300 K reveal the occurrence of magnetically isolated high-spin cobalt(II) of the mesocate units in 1 and 3 plus a thermally inducedspincrossover behavior of the [Co(tppz)2]2+ unit in 3, whereas 2 and 4
Rational design of a new class of heterobimetallic molecule-based magnets: Synthesis, crystal structures, and magnetic properties of oxamato-bridged (M′=LiI and MnII; M=NiII and CoII) open-frameworks with a three-dimensional honeycomb architecture
作者:Danielle Cangussu、Emilio Pardo、Marie-Claire Dul、Rodrigue Lescouëzec、Patrick Herson、Yves Journaux、Emerson F. Pedroso、Cynthia L.M. Pereira、Humberto O. Stumpf、M. Carmen Muñoz、Rafael Ruiz-García、Joan Cano、Miguel Julve、Francesc Lloret
DOI:10.1016/j.ica.2008.02.042
日期:2008.9
formula Li5[Li3M2(mpba)3(H2O)6] · 31H2O [M = NiII (1a) and CoII (1b)] and Li2[Mn3M2(mpba)3(H2O)6] · 22H2O [M = NiII (2a) and CoII (2b)] have been prepared from the metal-mediated self-assembly of the hexakis(bidentate), triple-stranded dinickel(II) and dicobalt(II) complexes [M2(mpba)3]8− [mpba = meta-phenylenebis(oxamato)] with either monovalent lithium(I) or divalent manganese(II) ions respectively, in
Crystal Engineering Applied to Modulate the Structure and Magnetic Properties of Oxamate Complexes Containing the [Cu(bpca)]<sup>+</sup> Cation
作者:Willian X. C. Oliveira、Carlos B. Pinheiro、Marinez M. da Costa、Ana P. S. Fontes、Wallace C. Nunes、Francesc Lloret、Miguel Julve、Cynthia L. M. Pereira
DOI:10.1021/acs.cgd.6b00613
日期:2016.7.6
work deals with the crystalengineering features of four related copper(II)-based compounds with formulas [Cu(bpca)}2(H2ppba)]·1.33DMF·0.66DMSO}n (2), [Cu(bpca)(H2O)}2(H2ppba)] (3), [Cu(bpca)}2(H2ppba)]·DMSO (4), and [Cu(bpca)}2(H2ppba)]·6H2O (5) [H4ppba = N,N′-1,4-phenylenebis(oxamic acid) and Hbpca = bis(2-pyridylcarbonyl)amide] and how their distinct molecular and crystal structures translate
Characterization of compounds derived from copper-oxamate and imidazolium by X-ray absorption and vibrational spectroscopies
作者:Gustavo M. do Nascimento、Walace D. do Pim、Daniella O. Reis、Tatiana R.G. Simões、Noriberto A. Pradie、Humberto O. Stumpf
DOI:10.1016/j.saa.2015.02.012
日期:2015.5
spectroscopies and the band assignments were supported by DFT calculations. Strong IR bands from 1610 to 1700cm(-1) dominated the spectra of the complex and can be assigned to νCO vibrations of the [Cu(opba)](2-) anions by the comparison with the DFT data. In opposition to the FTIR spectra, the main vibrationalbands in the Raman spectra are observed in the 1350-1600cm(-1) range. All bands in this region are