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贝母属植物异甾体生物碱的存在及其分类学意义

余世春, 肖培根   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1992-09-10 发布日期:1992-09-10
  • 通讯作者: 余世春

The Existence of Isosteroidal Alkaloids in Fritillaria L.(Liliaceae) and Its Taxonomical Significance

Yu Shi-Chun, Xiao Pei-Gen   

  • Received:1900-01-01 Revised:1900-01-01 Online:1992-09-10 Published:1992-09-10
  • Contact: Yu Shi-Chun

摘要:

本文根据化学成分资料,探讨了百合科贝母属在植物化学分类上的指征,指出5α-cevanine类
异甾体生物碱为该属植物的特征性成分(Characteristic constituents);从其生源上看,结构中的C13
与C17位应是其生物合成中氮源骈合的结合部位,即可产生C13、C17上双氢反式(如浙贝甲素
verticine、浙贝乙素verticinone)和顺式(如炉贝甲素delavine、松贝甲素songbeinine)两大类型的生
物碱。同时,作者分析了特征性成分在中国分布区内本属植物主要种中的存在状态,结果提示:其
存在形式与其相应植物的形态、地理分布有—定的相关性,值得进—步加以深入研究。

关键词: 百合科, 贝母属, 特征性成分, 5α-cevanine类异甾体生物碱

Abstract:

 The plant chemotaxonomical marker of Fritillaria L. is discussed in this
paper according to the information on chemical components. Plenty of evidence
shows that 5α-cevanine isosteroidal alkaloids are the characteristic constituents of
this genus. In the light of the biogensis of this kind of alkaloids, the C-13 and
C- 17 of the molecular structures may be rational positions uniting a nitrogenous
group in their biosyntheses which make two kinds of 5α-cevanine isosteroidal
alkaloids,  the  dihydrogen  of C- 13  and  C- 17  being  at  the  state  of
trans-configuration (e. g. verticine, verticinone) and at the state of cis-
configuration (e.g. delavine, chuanbeinone and songbeinine). Meanwhile, this
paper reports the existence and content of some 5α-cevanine isosteroidal alkaloids
in main Chinese fritillarias.  This result reveals that there may be a relationship
between the formation of characteristic constituents on one hand and other
morphological characters and distribution of the plants concerned on the other,
which encourages further investigation.

Key words: Liliaceae, Fritillaria L., Characteristic constituents, 5α-cevanine isosteroidal alkaloids