Cycloaddition-oxidative cleavage pathways to 14β-formyl-19-norsteroids

Add time:07/31/2019    Source:sciencedirect.com

Cycloaddition of 3-methoxyestra-1,3,5(10),14,16-pentaen-17-yl acetate 1 with methyl propiolate, followed by chemoselective modification of the cycloadduct, furnishes intermediates for reduction-oxidative cleavage reaction sequences, leading to the 14β-formyl analogue of estrone and related 14β-formyl-19-norsteroids.

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