The incorporation of nine 14C-labelled, assumed biosynthetic precursors of verrucarin E (1) formed by Myrothecium verrucaria have been measured. The antibiotic and 3-acetyl-4methyl-pyrrolc (3) derived from it wcre oxiclized, and the radioactivity of four of thc seven Catoms determined. It has been f
Die Struktur des Antibioticums Roridin E. Verrucarine und Roridine, 21. Mitteilung [1]
✍ Scribed by P. Traxler; W. Zürcher; Ch. Tamm
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- German
- Weight
- 902 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Structure 1 has been established for roridin E (Cz9Ha808), an antibiotic isolated from cultures of Myrothecium species. Base catalysed hydrolysis of 1 gave the known sesquiterpene alcohol verrucarol (4; C,,H,,O,) and 2'-anhydrororidinic acid (6 ; C,,H,O,),
a new dicarboxylic acid. The structure of 6 was determined by spectral analysis of its dimethyl ester 7, dimethyl hexahydro-2'-anhydrororidinate (9), the acetyl derivative 10, and the oxidation product 11. ')
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Verrucarin J ist ein mit dem Antibioticum Verrucarin A [2] [3] strukturell nahe verwandtes Stoffwechselprodukt von Myrothecium verrucaria (ALBERTINI et SCHWEI-NITZ) DITMAR ex FRIES und von Myrothecium roridum TODE ex FR., Gattungstyp bei FRIES [I]. Wie Verrucarin B [4] erscheint Verrucarin J meist a