Helvetica chimica acta

Synthesen von Carotinen mit ψ??Endgruppen und (Z)??Konfiguration an terminalen konjugierten Doppelbindungen

A Zumbrunn, P Uebelhart, CH Eugster

Index: Zumbrunn, Albrecht; Uebelhart, Peter; Eugster, Conrad Hans Helvetica Chimica Acta, 1985 , vol. 68, p. 1519 - 1539

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Citation Number: 24

Abstract

1. Einleitung.-Nach unserem Vorschlag [Z][3] lasst sich die Bildung der 8-, E-und y- Endgruppe in der biologischen Cyclisation von Neurosporin bzw. Lycopin mit der Konfiguration an C (5) des offenkettigen Vorlaufers 1 in dem Sinne erklaren, dass aus stereoelektronischen Griinden aus (5E)-1 die P-Endgruppe 2 und aus (52)-1 die E-und y- Endgruppe 3 bzw. 4 gebildet werden (s. Schema I). Dieser Vorschlag setzt voraus, dass ...

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