USE OF alpha,beta -UNSATURATED CARBONYL COMPOUNDS AS QUENCH REAGENTS FOR THE BIRCH REDUCTION
Use of α,β-unsaturated carbonyl compounds as quench reagents for the Birch reduction.
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Page/Page column 1
(2009/01/20)
Radical-induced Reduction of α,β-Unsaturated Steroid Ketones with Tributyltin Hydride
Conjugated steroid ketones are reduced stereoselectively with tributyltin hydride in the presence of azobisisobutyronitrile as radical initiator to give the corresponding saturated ketones in high yields.
Laurent, Henry,Esperling, Peter,Baude, Guenter
p. 1996 - 1999
(2007/10/02)
Process for the preparation of androstane-3,17-dione derivatives
A process for the preparation of androstane-3,17-dione compounds of the formula STR1 wherein X is 1,2-methylene or 1- or 2-methyl, comprises fermenting a sterol of the formula STR2 wherein X is as above and R1 is the hydrocarbon residue of 8-10 carbon atoms, of a sterol, with a microorganism culture capable of effecting the side chain degradation of sterols.
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(2008/06/13)
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