Nicotinamide Coenzyme Models, I. Synthesis and Molecular Structure of Four Isomeric Bis (methoxycarbonyl)[2.2](2, 5) pyridinophanes

…, HJ Hasselbach, C Krieger

Index: Staab, Heinz A.; Hasselbach, Hans-Joachim; Krieger, Claus Liebigs Annalen der Chemie, 1986 , # 4 p. 751 - 764

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Abstract

Abstract As nicotinamide coenzyme models the [2.2](2, 5) pyridinophanes 3–6 were prepared which consist of two interacting nicotinic ester units in the four different orientations possible. 3–6 were obtained by photolytic sulfur extrusion from the corresponding dithia- [3.3](2, 5) pyridinophanes 18–21 the syntheses of which are described.—The molecular structures for all four isomers 3–6 were determined by X-ray analysis. The sterical ...