SYNTHESIS OF (±)-NORAMBREINOLIDE BY CYCLIZATION OF TRANS-β-MONOCYCLOHOMOFARNESIC ACID
Chemistry Letters1981Vol. 10(6), pp. 757–760
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Abstract
Abstract Synthesis of norambreinolide by acid-catalized cyclization of trans-β-monocyclohomofarnesic acid was studied. From the acid norambreinolide was obtained in 57 per cent yield by catalysis of stannic chloride in dichloromethane at −78°C. Isomerization of norambreinolide to norisoambreinolide was observed with a rise of reaction temperature in the presence of stannic chloride.
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