本文论述了油菜素甾醇内酯的生理作用，以及油菜素甾醇内酯的化学结构与生理活性间的相互关系。
In this paper the physiological action of brassinolide was dis cussed, and the relationship between the chemical structure and physiological activity of brassinolide was also demonstrated.
以麦角甾醇为原料，经七步合成24-表油菜素内酯，前两步反应不需进一步提纯，提高了收率、具有工业化价值。
Synthesis of 24-epibrassinolide in seven steps from ergosterol, and methods ahead of two steps which used without further purification which there is high yield and asset of industrialization.
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