## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โFull Textโ option. The original article is trackable v
Synthesis of 8-substituted 5H,9H-6-oxa-7-aza-benzocyclononene-10,11-dione-11-O-methyloximes, a new [1,2]-oxazonine ring system
โ Scribed by Alfons Pascual; Hugo Ziegler; Stephan Trah; Peter Ertl; Tammo Winkler
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- French
- Weight
- 152 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0040-4039
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๐ SIMILAR VOLUMES
## Abstract The preparation of a novel purine containing heterocyclic ring system, indolotriazinopurine, by the condensation of 8โhydrazinotheophylline with 5โsubstituted isatins __via__ the intermediate hemiaminal and hydrazone derivatives, is described.
## Abstract The molecular structures of the title compounds 3 and 5 were investigated by NMR and Xโray structural methods. The NMR results suggest two equivalent halves for both molecules. The Xโray study shows an approximate mirror plane for 3 and an approximate twofold axis for a significant port