𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Application of mass spectrometry to structure problems. The structure of quebrachidine

✍ Scribed by Marvin Gorman; A.L. Burlingame; K. Biemann

Publisher
Elsevier Science
Year
1963
Tongue
French
Weight
335 KB
Volume
4
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

An investigation of the alkaloids from the leaves of Aspidosperma yuebracho blanco Schlecht. yielded, in addition to considernble quantities of aspidospermine, a new alkaloid which was named quebrachidine. It was shown to have structure (I) on the basis of arguments presented in this paper. The alkaloid was obtained in circa 0.18% yield by direct crystallization (benzene) of the alkaloid fraction obtained by 2 extraction of the alkalinized, ground leaves with benzene.

πŸ“œ SIMILAR VOLUMES

Application of mass spectrometry to stru
Application of mass spectrometry to structure problems: condylocarpine.
✍ K. Biemann; A.L. Burlingame; D. Stauffacher πŸ“‚ Article πŸ“… 1962 πŸ› Elsevier Science 🌐 French βš– 229 KB

Recently, a number of alkaloids were isolated2 by one of us (D.S.) from Diplorrhynchus condylocarpon (Muell. Arg.), Among them were yohimbine, S-yohimbine, tombozine and stemmadenine, all indole alkaloids, and

Application of Electrospray Ionization M
Application of Electrospray Ionization Mass Spectrometry to the Elucidation of the Primary Structure of Lignin
✍ Dmitry V. Evtuguin; Francisco M. L. Amado πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 112 KB

## Abstract Electrospray ionization mass spectrometry (ESI‐MS) was successfully applied to the structural analysis of lignin. The structure of oligomers fractionated from Eucalyptus globulus dioxane lignin was elucidated using tandem mass spectrometry, and the information on fragmentation patterns

Contributions of mass spectrometry to st
Contributions of mass spectrometry to structural immunology
✍ Downard, Kevin M. πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 149 KB πŸ‘ 1 views

Mass spectrometry has made important contributions to the field of immunology in the past decade. A variety of mass spectrometric-based techniques have been applied to study the structures of macromolecules that play a vital role in the immune response. These include traditional molecular mass measu

Mass spectrometry in structural and ster
Mass spectrometry in structural and stereochemical problems. The structure of the aspidosperma alkaloid aspidoalbine
✍ Cari Djerassi; L.D. Antonaccio; H. Budzikiewicz; J.M. Wilson; B. Gilbert πŸ“‚ Article πŸ“… 1962 πŸ› Elsevier Science 🌐 French βš– 441 KB

IN continuation of our studies3 on the alkaloidal constituents of Brazilian Aspidosperma species, we have investigated the stem bark of Aspidosperma album (Vahl) R. Bent., which was collected in Manaus, Amaronas. The non-phenolic portion yielded the lcnown alkaloid4 (-)-quebmchamine, while from the