Ethyl ent-15α-[(2-nitrobenzyloxy)methyl]-16-oxobeyeran-20-oate
oleh: Ya Wu, Xia Wang, Jian-hong Gong, Jing-chao Tao
| Format: | Article |
|---|---|
| Diterbitkan: | International Union of Crystallography 2012-08-01 |
Deskripsi
In the title compound, C30H41NO6, the three six-membered rings adopt chair conformations and the stereochemistry of the A/B and B/C ring junctions are trans. The five-membered ring D adopts an envelope conformation, with the methylene C atom as the flap. The title compound was synthesized via esterification, Tollens reaction, 1,5-hydride shift from the natural tetracyclic diterpenoid isosteviol