1249-66-7Relevant academic research and scientific papers
Autooxidation of Δ17(20)-20-hydroxy derivatives of steroids. Synthesis of 3β-acetoxy-17α-hydroperoxy-16α- methylpregn-5-en-20-one and its reduction to 17α-hydroxy derivative
Savinova,Lukashev,Huy,Beletskaya
, p. 54 - 61 (2011)
An efficient procedure was proposed for the synthesis of 3β-acetoxy-17α-hydroperoxy-16α-methylpregn-5-en-20-one. Optimal conditions were found for the combined process including 1,4-addition of methylmagnesium bromide at the Δ16-20-oxo fragment of dehydropregnenolone acetate and autooxidation of resulting bromomagnesium 3β-acetoxy-16α-methylpregna-5,17(20)-dien-20-olate. The subsequent reduction of the 17α-hydroperoxy group and hydrolysis of the 3β-acetoxy group afforded 17α-hydroxy-16α-methyl-substituted dehydropregnenolone acetate and its 3-hydroxy analog in high yield.
Efficient synthesis of 16α-methyl cyproterone acetate
Sakee, Uthai,Kongkathip, Boonsong,Kongkathip, Ngampong
, p. 12 - 13 (2007/10/03)
An effective method for synthesis of 16α-methyl cyproterone acetate was accomplished starting from commercially available 16-dehydropregnenolone acetate in eight steps, 11.5% overall yield.
