Spirocephams 4 and S have been obtained from aldehyde 1 and hydroxylamine or hydrazine, as single diastereoisomers. Structures of these compounds have been elucidated by NME experiments and FIND0 calculations. In the course of a prograssne to design cephems modified at the 3 position, we condensed
Synthesis and structure elucidation of a new [2]-catenane
โ Scribed by Hunter, Christopher A.
- Book ID
- 121249202
- Publisher
- American Chemical Society
- Year
- 1992
- Tongue
- English
- Weight
- 972 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0002-7863
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract A novel poly[2]โcatenane containing rigid catenane subunits connected by semirigid spacers has been synthesized. This new macromolecular architecture is the second example of a polymer containing topological bonds in the main chain. The poly[2]โcatenane structure was proved by spectrosc
Papaverine is a drug that can be easily oxidized to papaverinol, papaveraldine and to recently discovered 2,3,9,10-tetramethoxy-12-oxo-12H-indolo[2,1-a]isoquinolinium chloride. In a strong alkaline medium the spectroscopic properties of this latter compound are modified indicating formation of a new