Suchergebnisse

A one-step method for the transformation of 3α,5-cyclo-6β-methyl ethers of steroids into the corresponding 3α,5-cyclo-6-ketones under the action of methyl (trifluoromethyl) dioxirane has been developed. The possibilities of the method have been demonstrated by preparing 3-dehydrotesterone, the biosynthetic precursor of brassinolide.

The synthesis of previously undescribed 22- and 23-deoxyanalogues of homocastasterone has been carried out, which makes it possible to obtain target compounds without replacing the carbon skeleton of the side chain. The key reactions in their synthesis were epoxy ring opening and radical debromination.