Abstract

Cycloaddition of activated furans 10 to 4-methoxycyclopent-2-enone was unexpectedly found to take place with a regioselectivity opposed to that predicted by FMO theory. The reaction represents a direct route towards polyfunctionalised cis-hydrindanones which are key intermediates for the synthesis of ottelione A, a potent inhibitor of tubulin polymerisation.

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