1. 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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2. The synthetic method is simple and convenient and direct; and the spiral ring skeleton obtained from spiro-diketone has optical pure chiral ligand with different absolute configurations.
本发明的合成方法简便直接，从外消旋的螺环二酮出发得到螺环骨架具有不同绝对构型的光 学纯的手性配体。
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3. Steroids including a spiro ring in position 17, the process and the intermediates for their preparation, their use as medicaments, and the pharmaceutical compositions containing them.
4. The spiro compounds containing indole moiety which have significant physiological and biological activity are widely existed a variety of natural products.
含有吲哚结构的螺环骨架广泛存在于各种天然产物中，它具有显著的生理和生物活性。
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5. 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。
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6. 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。
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7. 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。
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8. Described herein are compounds that have a spiro structural feature.
