Pseudonitrosites and Other Azodioxides with Vicinal Electron Acceptors
摘要:
Twelve vicinally substituted nitro-nitroso compounds (pseudonitrosites) were synthesized, nine of them for the first time. In the solid state the dimeric azodioxides are present. In the class of the pseudonitrosites 2a-h, all compounds exhibited comparatively strong antiplatelet activity in vitro (Born test: collagen). Four of them showed an IC50 below 10 mu M, 2a being the most active I substance with an IC50 = 2.1 mu M. When administered orally to rats (60 mg/kg) small antithrombotic effects were observed. The pseudonitrosite 6d was the most active compound(18% inhibition in arterioles). The in vitro decomposition of 2a at 37 degrees C gave NO and N2O, indicating that the above pharmacological effects were mediated by an NO-dependent mechanism. The replacement of the nitro group in the pseudonitrosite partial structure by other electron accepters i.e. acetyl, carboxyl, or acetyloxy groups leads to inactive (10a) or less active compounds (10b, c).
Pseudonitrosites and Other Azodioxides with Vicinal Electron Acceptors
摘要:
Twelve vicinally substituted nitro-nitroso compounds (pseudonitrosites) were synthesized, nine of them for the first time. In the solid state the dimeric azodioxides are present. In the class of the pseudonitrosites 2a-h, all compounds exhibited comparatively strong antiplatelet activity in vitro (Born test: collagen). Four of them showed an IC50 below 10 mu M, 2a being the most active I substance with an IC50 = 2.1 mu M. When administered orally to rats (60 mg/kg) small antithrombotic effects were observed. The pseudonitrosite 6d was the most active compound(18% inhibition in arterioles). The in vitro decomposition of 2a at 37 degrees C gave NO and N2O, indicating that the above pharmacological effects were mediated by an NO-dependent mechanism. The replacement of the nitro group in the pseudonitrosite partial structure by other electron accepters i.e. acetyl, carboxyl, or acetyloxy groups leads to inactive (10a) or less active compounds (10b, c).
Action du monoxyde d'azote sur le phényléthylène et sur quelques arylalcènes
作者:Jacques Tuaillon、Roger Perrot
DOI:10.1002/hlca.19780610203
日期:1978.3.8
Nitric oxide reacts with phenylethylene and arylalkenes under the action of sunlight and at room temperature giving dimeric nitronitroso compounds prouved by IR. spectroscopy (see Table 2) and the corresponding nitroolefins. The main gaseous product is nitrogen as prouved by gaz liquid chromatography (see Table 1). The dimeric nitronitroso compounds can also be obtained by the reaction of dinitrogen