Starting from our recently described synthon (+)-24, the enantiomerically pure 3,6:4,5:3',6':4,5'-tetraepoxy-4,5,4,5'-tetrahydro-&,~-carotene (34) and its 15,15'-didehydro analogue 32 were synthesized in eleven and nine steps, respectively (Scheme 4 ) . Chiroptical data show, in contrast to the pare
Carotinoide mit 7-Oxabicyclo[2.2.1]heptyl-Endgruppen. Teil II. Synthese von (2S,5R,6S,2′S,5′R,6′S)-2,5:2′5′-Diepoxy-5,6,5′,6′-tetrahydro-β,β-carotin
✍ Scribed by Michael Roman Gmünder; Conrad Hans Eugster
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- German
- Weight
- 556 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
11 12 13 ( 1 5 2 ) 14 (all-E) a ) LiAIH,. h ) Pyridinium-dichromat:Molekularsieb. c ) Wittig-Homer-Reaktion rnit CS-Nitrilphosphonat d ) DIBAH, -78", Hydrolyse. *) Vgl. [4] und darin zit. Arbeiten.
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