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Synthesis of new ne...
Synthesis of new nepenthone derivatives
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Marton, J. (författare)
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- Szabó, Zoltan (författare)
- Alkaloida Chemical Company Ltd., H-4440 Tiszavasvári, Hungary
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Simon, C. (författare)
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Hosztafi, S. (författare)
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Makleit, S. (författare)
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Alkaloida Chemical Company Ltd, H-4440 Tiszavasvári, Hungary (creator_code:org_t)
- Wiley, 1996
- 1996
- Engelska.
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Ingår i: Liebigs Annales. - : Wiley. - 0947-3440 .- 1099-0690. ; :10, s. 1653-1656
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Hydrogenation of nepenthone (3a) leads to a mixture of dihydronepenthone (3c) and the secondary alcohol (20S)-4b. The enantiomeric secondary alcohol (20R)-4b is prepared from the 7α-formyl-6,14-ethenomorphinan derivative 3b by reaction with phenylmagnesium bromide to afford a mixture of the diastereoisomeric alcohols 4a. Hydrogenation of 4a leads to (20S)-4b and (20R)-4b, which are separated by fractional crystallization. The conformations of (20S)-4b and (20R)-4b are determined by NOE difference experiments.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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