Hydroazulenoid diterpenes from the brown alga dictyota dichotoma var. Implexa
β Scribed by Salvatore De Rosa; Salvatore De Stefano; Nevenka Zavodnik
- Book ID
- 107842635
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 288 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0031-9422
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Structure of epoxydictymene (l), a new tetracyclic diterpene from Dictyota dichotoma, has been determined zainly on the basis of X-ray analysis.
Contrnued investrgatron of the manne brown alga, D/ctyofa vo/ub//~s, has led to the isolation of SIX new hydroazulenord, 1-6, and five previously reported drterpenes, 7-11 Each of the new compounds IS unusual n either the degree of oxygenation and, or the substitution pattern of the hydroazulenord r
tified 20th carbon, C-6. Therefore, through the 'H assignments, the carbon skelton was given and the planner structure of ,$, was established. Relative stereochemistries of both rings were determined by the NOES observed with respect to those five pairs of protons, (H-l, H-3), (H-l, Me-19), (H-3, Me