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 alka
โฆ LIBER โฆ
Application of mass spectrometry to structure problems: condylocarpine.
โ Scribed by K. Biemann; A.L. Burlingame; D. Stauffacher
- Publisher
- Elsevier Science
- Year
- 1962
- Tongue
- French
- Weight
- 229 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
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
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Echitamidine' is a minor alkaloid accompanying echitandne in a number of ALetonia species. While the structure of e&i-e--a subject of extensive chetical. investigations3 --has been settled by x-ray analyaisp very little information has been accumulated on its companion, ecbitamidine. Its discoverer,