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Conformation and Crystal Structure of Dipyrrinones with Oxindole Components

✍ Scribed by Stefan E. Boiadjiev; David A. Lightner


Publisher
Springer Vienna
Year
2003
Tongue
English
Weight
138 KB
Volume
134
Category
Article
ISSN
0026-9247

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X-Ray Crystal Structure Analysis of Oxin
✍ Gerhard Laus; Klaus Wurst πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 German βš– 124 KB πŸ‘ 1 views

## Abstract The single‐crystal X‐ray structures of speciophylline, mitraphylline, and rhynchophylline, oxindole alkaloids from the Peruvian climbing vine __Uncaria tomentosa__ (Rubiaceae), were determined. The three compounds show Nβ‹…β‹…β‹…Hο£ΏN hydrogen bonding, which has not been observed in the crystal