condensed ring derivative.
稠环衍生物
Synthesis of novel chiral condensed ring lactones
新型手性杂环并环丁内酯的合成研究
Development in Synthesis of Condensed Ring Derivative Liquid Crystal
稠环衍生物类液晶的合成进展
From the mass spectrometry, 22 kinds of compounds are identified, which are morphinan, indole, acridone, pyrone, and condensed ring and phenols compounds.
共分离鉴定出生物碱，稠环类和酚类物质等22种化合物。
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