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- Title
Aufbau der Ligandsysteme des C, D-Tetradehydrocorrins und Isobakteriochlorins durch Sulfidkontraktion. Kurzmitteilung.
- Authors
Ofner, Silvio; Rasetti, Vittorio; Zehnder, Beat; Eschenmoser, Albert
- Abstract
Synthesis of C, D-Tetradehydrocorrins and Isobacteriochlorins via Sulfide Contraction The reaction sequences shown in Schemes 4 and 5 illustrate the use of the sulfide contraction method for the synthesis of isobacteriochlorins and (metal free) C, D-tetradehydrocorrins. The tetradehydrocorrin synthesis fills a gap in a spectrum of corrinoid (A → D) ring closures that ranges from A.W. Johnson's oxidative (A → D)-cyclizations to octadehydrocorrinoids on the one side to the photochemical 1, 19-secocorrin → corrincycloisomerization on the other (Scheme 7). Such a multiplicity of reaction paths towards corrinoids is of interest in connection with the problem of the origin of the corrin structure.
- Publication
Helvetica Chimica Acta, 1981, Vol 64, Issue 5, p1431
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.19810640520