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cis-3,4,4a,9,10,10a-Hexahydro-1,4a-ethanophenanthrene-2(1H),12-dione, C16H16O2

✍ Scribed by Mukherjee, A. K. ;Mukherjee (née Mondal), M.

Book ID
114502205
Publisher
International Union of Crystallography
Year
1984
Tongue
English
Weight
317 KB
Volume
40
Category
Article
ISSN
0108-2701

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The title diterpene, C 19 H 24 O 4 , which was totally synthesized from geranic acid, has the tricyclic backbone of a podocarpic diterpene. The skeleton does not show a planar configuration, but is distinctly bent.

Synthesis and X-Ray Structural Studies o
Synthesis and X-Ray Structural Studies of ‘4,7,13-Trioxa-1,10-diaza-5,6-benzocyclopentadecane-2,9-dione’ ( = 5,6,9,10-Tetrahydro-2H, 8H-benzo[b][1,4,10]trioxa[7,13]diazacyclopentadecene-311(4H,12H)-dione) and ‘4,7,13,16-Tetraoxa-1,10-diaza-5,6-benzocyclooctadecane-2,9-dione’ ( = 5,6,8,9,12,13-Hexahydro-2H,11H-benzo[b][1,4,10,13]tetraoxa- [7,16]diazacyclooctadecene-3,14(4H, 15H)-dione)
✍ Przemyslaw Gluziński; Janusz Jurczak; Janusz W. Krajewski; Piotr Sałański; Tomas 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 German ⚖ 306 KB 👁 1 views

## Abstract The molecular structures of the title compounds 3 and 5 were investigated by NMR and X‐ray structural methods. The NMR results suggest two equivalent halves for both molecules. The X‐ray study shows an approximate mirror plane for 3 and an approximate twofold axis for a significant port