Photochemical transformations. Part XXVI. Some 19-substituted lanostane derivatives
Abstract
Photolysis of 3β-acetoxylanostan-11 β-yl nitrite affords 3β-acetoxy-19-hydroxyiminolanostan-11β-ol. From this compound 19-nitrilo- and 19-amino-derivatives have been prepared. The method of forming the 9β,10β-cyclopropane ring by deamination of 19-aminolanost-9(11)-en-3β-ol, as previously reported, does not lead to cyclopropane derivatives.