In:
European Journal of Organic Chemistry, Wiley, Vol. 2004, No. 15 ( 2004-08), p. 3262-3268
Kurzfassung:
Some new 16β‐acetoxy‐22,26‐epoxy‐23‐vinylcholest‐22‐ene steroid derivatives have been synthesized from sapogenins via a two‐step sequence involving the reduction of a vinylogous ester moiety by 9‐BBN, a reaction with few precedents and for which a coherent mechanistic interpretation has not been given before now. Some mechanistic insight into this reaction was gained from NMR spectroscopic evidence. A plausible general mechanistic interpretation of the action of 9‐BBN on vinylogous esters is proposed. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
Materialart:
Online-Ressource
ISSN:
1434-193X
,
1099-0690
DOI:
10.1002/ejoc.v2004:15
DOI:
10.1002/ejoc.200400178
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2004
ZDB Id:
1475010-7
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