Synthesen von Moniliformin, einem Mycotoxin mit Cyclobutendion??Struktur

…, H Fischer, H Greuter, P Martin

Index: Bellus; Fischer; Greuter; Martin Helvetica Chimica Acta, 1978 , vol. 61, # 5 p. 1784 - 1813

Full Text: HTML

Citation Number: 51

Abstract

Summary Six different routes to 3-hydroxy-3-cyclobutene- 1, 2-dione (4), the free acid of the mycotoxine Moniliformin (= alkali salt of 4) are described. A common feature of all pathways is the synthesis of cyclobutanes having the oxidation level 6. Moniliformin precursors which are easily transformed to 4 by acid catalysed hydrolysis include [2+ 21-cycloadducts of ketene with tetraalkoxy-olefins, 3, 4, 4-trial koxycyclobutenes, derivatives of ...