Concise synthesis of Cannabisin G

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Abstract

Cannabisin G (1), a naturally occurring lignanamide, was synthesized in 45% overall yield starting from 3-tert-butyl ethyl ferulate (6). An oxidative coupling by potassium ferricyanide in an alkaline media serves as the key step to construct the biphenylbutadiene skeleton of 1 with high regioselectivity.

Graphical abstract

Cannabisin G (1), a naturally occurring lignanamide, was synthesized in 45% overall yield starting from 3-tert-butyl ethyl ferulate (6). An oxidative coupling by potassium ferricyanide in an alkaline media serves as the key step to construct the biphenylbutadiene skeleton of 1 with high regioselectivity.

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