In another direction, the radical cyclization of thioimide with acylsilane produced simple cyclization product in low yield without expected enol silyl ether compound.

对于硫醯亚胺与矽基酮的自由基反应，则是得到低产率的简单环化产物，而不是预期的烯醇矽醚化合物。

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The scavenging effect of selenium on peroxy radical was directly investigated with two kinds of selenium compound by means of electron spin resonance (ESR) technique.

运用电子自旋共振（ESR）技术直接观察了两种硒的化合物对过氧自由基的清除作用。

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CONCLUSION: Compound 1 had a good activity on suppressing oxygen free radical damage.

结论：化合物1具有明显抗氧自由基损伤的作用。

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In the late 1980s Floyd injected gerbils with a free-radical-trapping compound called phenylbutyl nitrone just before inducing a stroke.

FORBES: Brain Repair