Mikrobielle hydroxylierung von 3α, 6α-dihydroxy-5β-pregnan-20-on mit calonectria decora in 11α-stellung
作者:A. Schubert、K. Heller、R. Siebert
DOI:10.1016/s0040-4020(01)99261-0
日期:1962.1
Synthesis of the 11-oxygenated cholesterols and derivatives
作者:J.J. Schneider
DOI:10.1016/0040-4020(72)80108-x
日期:1972.1
The Woodward (Grignard) synthesis of cholestanol has been extended to the preparation of cholesterol and related stenols by employing a Δ5-3β-ol precursor, masking the 5,6-doublebond of the Grignard product by epoxidation, eliminating the hydroxyl group at C-20 via the olefin, and regenerating the Δ5-Sβ-ol system. This method has been used to prepare 11-ketocholesterol for the first time and, from