FIELD: organic chemistry, natural compounds, chemical technology, medicine.
SUBSTANCE: invention relates to a novel method for synthesis of 3β-acetoxy-20-oxonortaraxastane. Method involves interaction of chloroform extract prepared from plant Scotch thistle (Onopordum acanthium L.) flower receptacles comprising 3β-acetoxy-20-methylenetaraxastane with ozone excess in the mole ratio 3β-acetoxy-20-methylenetaraxastane : ozone = 1:1.5 at room temperature and stirring. The yield of the end product is 40%. Compound can be used as an antitumor and anti-inflammatory agent.
EFFECT: improved method of synthesis.
2 cl, 1 ex
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