(1S*,2S*,5R*,8S*,11S*,14R*,17S*,20R*)-14-Methyl-6-methylene-10,16,18-trioxahexacyclo[12.5.1.15,8.01,11.02,8.017,20]henicosane-7,9-dione: natural diterpenoid macrocalyxoformin B
The title compound, C20H24O5, isolated from Rabdosia var. lophanthoides Hara, is built up from six fused rings. Cyclohexane ring A adopts a chair conformation, ring B exists in a screw-boat conformation and ring C adopts a boat conformation; the three five-membered rings D, E and F adopt envelope co...
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| Format: | Article |
| Language: | English |
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International Union of Crystallography
2008-01-01
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| Series: | Acta Crystallographica Section E |
| Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600536807060692 |