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Título : Biogenesis of spirostan sapogenins: stereochemistry of reduction of the 24,25 double bond in the biosynthesis of sarsasapogenin
Autor : González, Antonio G., Betancor, Carmen, Francisco, Cosme G., Salazar, José A., Hernández, Rosendo, Suárez, Ernesto
Fecha de publicación : 1977
Editor: Elsevier
Resumen: It is well known that reduction of the 24,25 double bond of the Δ24-sterols such as lanosterol or cycloartenol (I) is a key step in the biosynthesis of many steroid components of plants. In this paper we show that during reduction of this 24,25 double bond in the biosynthesis of sarsasapogenin in Agave attenuata the incoming hydrogen at C-24 enters from the 24re,25re face, so that the whole reduction is a "trans" process (Scheme 1), unless stereochemical changes occur after reduction.
Descripción : 4 pages, 2 schemes.
Versión del editor:
ISSN: 0040-4039
DOI: 10.1016/S0040-4039(01)83125-7
Citación : Tetrahedron Letters 18(34): 2959-2962 (1977)
Appears in Collections:(IPNA) Artículos

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