Described herein are compounds that have a spiro structural feature.
本说明书描述了具有螺环结构特征的化合物。
The expected adduct 100 was not stable and appeared to undergo further reaction to the spiro intermediate 101.
由于所期待的加成物（100）不稳定，它经过进一步的反应，就产生螺环中间体。
The invention relates to garland chrysanthemum extract compounds, and a synthesis method and application thereof. The compounds have enol ether-spiro ketal-acetals and unsaturated side chains.
本发明茼蒿素类化合物及其合成方法与应用，该化合物具有烯醇醚-螺环缩酮-缩醛和不饱和侧链。
Spiro-heterocyclic compounds are important branch of heterocyclic compounds, and play an important role on today's research and development of pesticides and medicines.
螺杂环化合物是杂环化合物的一大重要分支，在当今农药和医药的研究与开发中都占据着重要的地位。
Spiro-heterocyclic compounds are important branch of heterocyclic compounds, and play an important role on today's research and development of pesticides and medicines.
螺杂环化合物是杂环化合物的一大重要分支，在当今农药和医药的研究与开发中都占据着重要的地位。
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