The Preparation of Furano-steroid Analogues of Demethoxyviridin
Abstract
The syntheses of a C-4:C-6 furano-steroid by the base-catalysed cyclization of 6α-acetoxyandrost-4-ene-3,17-dione and of a C-4:C-6 tetrahydrofuran by the cyclization of 3β,6β-dihydroxy-4β-hydroxymethylandrostan-17-one, are described.