1967
DOI: 10.1002/jlac.19677080120
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Mehrwertige Alkohole aus Sterinen und Sterinderivaten, V. 25‐Hydroxy‐koprostan‐ und ‐cholestan‐Derivate aus Hyodesoxycholsäure

Abstract: Aus Hyodesoxycholsaure (1) wird, uber 25-Homo-hyodesoxycholsaure (4), Koprostan-3cr.6a.25-triol (5) dargestellt. Umwandlungsprodukte aus 4 sind 3.6-Dioxo-25-homo-cholansaure (6) und 3~-Hydroxy-6-oxo-25-homo-cholansaure (8), die zu entsprechenden Derivaten der Allocholansaure (7 bzw. 9) umgelagert werden. Analoge Reaktionen mit 5 fuhren zu Cholestan-3a.6P.25-und -3P.6P.25-triol (17 bzw. 14).

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Cited by 6 publications
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“…Ardnt-Eistert extension of a cholic acid or cholenic acid (370) chains followed by MeMgX or MeLi reaction of the resultant ester 366 to yield a 25-hydroxycholestane (372) has been used by a number of groups after its introduction by Pearlman177 in connection with cholic acid (370a). Lettré et al 46,178 applied the sequence to several cholic acids 370b-c obtaining in some cases 24-enes 373b-d as had Mosbach and workers179 for the formation of C-24 labeled triol 372d.…”
Section: B Reduction Of 23-ketonesmentioning
confidence: 99%
“…Ardnt-Eistert extension of a cholic acid or cholenic acid (370) chains followed by MeMgX or MeLi reaction of the resultant ester 366 to yield a 25-hydroxycholestane (372) has been used by a number of groups after its introduction by Pearlman177 in connection with cholic acid (370a). Lettré et al 46,178 applied the sequence to several cholic acids 370b-c obtaining in some cases 24-enes 373b-d as had Mosbach and workers179 for the formation of C-24 labeled triol 372d.…”
Section: B Reduction Of 23-ketonesmentioning
confidence: 99%