以下为句子列表：
英文: Isoquinoline alkaloids of Litsea euosma were studied for the first time and compounds were obtained. The structure of these compounds were elucidated as boldine ,norisoboldine ,reticuline ,β-sitosterol and β-daucosterol by spectral analysis.
中文: 首次对清香木姜子(LitseaeuosmaW.W.Smith)中的异喹啉生物碱进行了研究,采用硅胶柱层析、重结晶等分离手段从中分离纯化得个化合物,通过现代波谱技术及与标准品对照等方法鉴定了它们的结构,包括 个异喹啉生物碱和β 谷甾醇及β 胡萝卜甙.
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英文: The chemical structures of CPU and CPU 80, two substituted tetrahydroisoquinoline calcium antagonists, and nifedipine were mimicked on a SGI-D G computer with the POLYGEN software.
中文: 借助于POLYGEN软件包在SGI－DG计算机上对四氢异喹啉钙拮抗剂CPU ，CPU80和硝苯啶的化学结构进行了分子模拟。
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