Molecular-Programmed Self-Assembly of Homo- and Heterometallic Tetranuclear Coordination Compounds: Synthesis, Crystal Structures, and Magnetic Properties of Rack-Type Cu<sup>II</sup><sub>2</sub>M<sup>II</sup><sub>2</sub> Complexes (M = Cu and Ni) with Tetranucleating Phenylenedioxamato Bridging Ligands
Me4en or dipn). The structures of 1−6 consist of cationic tetranuclear CuII2MII2 entities with an overall 4R rack-type architecture, which is made up of two oxamato-bridged homo- (1−5) or heterodinuclear (6) CuIIMII units (M = Cu and Ni) connected through either a meta- (1, 2, and 4) or a para-substituted (3, 5, and 6) phenylene spacer between the CuII ions. The magneticproperties of 1−6 have been interpreted
An octanuclear copper(II) complex possessing a dimer-of-tetramers structure self-assembles from a binuclear oxamatocopper(II) metallacryptand of the meso-helicate type; its magnetic behaviour is consistent with its unique double-propeller molecular topology.
Compounds represented below ##STR1## 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.
N,N'-(phenylene)dioxamic acids and their esters as antiallergy agents
作者:John B. Wright、Charles M. Hall、Herbert G. Johnson
DOI:10.1021/jm00207a016
日期:1978.9
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.
Synthesis and pharmacological activity of phenylenedioxamic and derivatives
作者:G. P. Petyunin、Zh. V. Dmitrievskaya、S. M. Drogovoz、T. V. Antkiv