A Simple Synthesis of 3β-Acetoxy-20-Oxomethylpregn-5-ene and 3β-Acetoxy-20-Hydroxymethylpregn-5-ene

F. V. Drozdov*, V. P. Timofeev**, and A. Yu. Misharin*#

# Phone: +7 (095) 246-3375; e-mail: Alexander.Misharin@ibmc.msk.ru

* Orekhovich Institute of Biomedical Chemistry, Russian Academy of Medical Sciences, Pogodinskaya ul. 10, Moscow, 119992 Russia

** Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, ul. Vavilova 32, Moscow, 117984 Russia

3β-Acetoxy-20-oxomethylpregn-5-ene and 3β-acetoxy-20-hydroxymethylpregn-5-ene were synthesized from (22R,23R)-sitost-5-ene-3β,22,23-triol in 66% overall yields.

Key words: sterols, synthesis

Received August 2, 2005; in final form, August 15, 2005

Russian Journal of Bioorganic Chemistry 2006, 32 (1):96-98