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- W2951678439 abstract "Es wird untersucht, inwieweit die Acetoxygruppe in 3a-Stellung der aus dem Epoxycholestan (I) erhältlichen Cholesten-Derivate (II) bei Additionen an die 5,6-Doppelbindung beteiligt ist, insbesondere, 0b sie in Konkurrenz zu reaktiven Gruppen in den Positionen I9 oder 19a den Verlaufder elektrophilen Addition von HOBr beeinflußt. Bei Anwesenheit einer inaktiven Gruppe (-ONO3) in der 19-Position beeinflußt die Ila-Acetoxy-Gruppe die Reaktion mit HOBr; Bildung der nicht interkonvertiblen isomeren Bromalkohole (V) und (VI) aus (IIb) über das Bromoniumion (III) und das Oxoniumion (IV) [(VI) cyclisiert sich beim Aufarbeiten zu dem Epoxid (VII)]." @default.
- W2951678439 created "2019-06-27" @default.
- W2951678439 creator A5084478574 @default.
- W2951678439 date "1984-03-27" @default.
- W2951678439 modified "2023-09-27" @default.
- W2951678439 title "ChemInform Abstract: STEROIDS. CCXCVII. ACETOXYL GROUP AS CONTROL ELEMENT IN ELECTROPHILIC ADDITION: PARTICIPATION BY ACETOXY GROUP AND ITS COMPETITION WITH OTHER PARTICIPATING GROUPS IN HYPOBROMOUS ACID ADDITION TO SOME 5-CHOLESTENE DERIVATIVES" @default.
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- W2951678439 doi "https://doi.org/10.1002/chin.198413312" @default.
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