Contribution to the Special Thematic Project ''Advances in Chiroptical Methods'' ## Abstract Cephalochromin, a homodimeric naphthpyranone natural product, contains both axial chirality due to the hindered rotation along the biaryl axis and central chirality due to the C-2, C-2 0 stereogenic cente
Determination of the absolute configuration of the asymmetric center at C11in the eudesmanolides
β Scribed by G. P. Moiseeva; Sh. Z. Kasymov; M. R. Yagudaev; G. P. Sidyakin
- Book ID
- 112373612
- Publisher
- Springer
- Year
- 1980
- Tongue
- English
- Weight
- 205 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0009-3130
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π SIMILAR VOLUMES
Osaka, Japan IN the preceding papers,' it was eetabliehed that both the C-4 and the C-10 methyl Bronps in guaiol (I) poeseas the a-configuration. Now the question remains as to whether the eubetituent at C-7 in guaiol is aor $-oriented. In thin rxperiment, an attempt was made to determine the absolu
The NMR spectral analysis of voacangine hydroxyindolenine (2) and of some synthetic derivatives, together with mechanistic considerations, permitted to establish its absolute configuration at C(7) as ( R ). The configuration at C(7) in hydroxyindolenines of the ibogamine series is also discussed and