𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Über die Biosynthese des Antibioticums Verrucarin E. Verrucarine und Roridine, 19. Mitteilung [1]

✍ Scribed by P. Pfäffli; Ch. Tamm


Publisher
John Wiley and Sons
Year
1969
Tongue
German
Weight
578 KB
Volume
52
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis


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 found that the carbon skeleton of vcrrucarin E does not originate from proline, glutamic acid and its biogentic equivalcnts nor from 5-amino-levulinic acid, but is built up from four acetate units with loss of one carboxyl C-atom. These results are rationalized by proposing a biogenetic pathway for verrucarin E.


📜 SIMILAR VOLUMES


Die Struktur des Antibioticums Roridin E
✍ P. Traxler; W. Zürcher; Ch. Tamm 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 German ⚖ 902 KB

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

Die Konstitution von Verrucarin E. Verru
✍ E. Fetz; Ch. Tamm 📂 Article 📅 1966 🏛 John Wiley and Sons 🌐 German ⚖ 679 KB

l7o1. 49, Fasc. Emile Cherbuliez (1966) -S o . 39-40 349 chromatographiert. 6-Polyhydroxypropyl-pterine werden vollstandig aum Pterind-aldehyd exydiert. 2 . w j Papier: Urn wertvolte Substanz zu sparen, sowie bei Vorliegen sehr geringer Mengen, l&st sich die Perjodat-Oxydation auch auf Filtrierpapie

Über die Verrucarine und Roridine. 2. (v
✍ Ch. Tamm; J. Gutzwiller 📂 Article 📅 1962 🏛 John Wiley and Sons 🌐 German ⚖ 421 KB 👁 1 views

## Partialstruktur von Verrucarin A von Ch. Tamm und J. Gutzwiller (22. VI. 62) ## 2. (vorlaufige) Mitteilungl) Verrucarin A, eines der neuen cytostatisch hochwirksamen Antibiotica aus Myrothecium-Arten'), besitzt auf Grund der Elementaranalysen, des thermoelektrisch bestimmten Mo1.-Gew. und der