A New Example of Edge-to-Face Interaction of Aromatic Rings in Oligopeptides : Cyclolinopeptide A

Abstract

The analysis o f the arom atic region o f 'H and 13C N M R spectra o f cyclolinopeptide A (cyclic nonapeptide with the sequence c ( P r o P r o P h e P h e L e u I l e I l e L e u V a l ) , (CLA)) shows tha t Phe-3 and Phe-4 arom atic rings are oriented nearly perpendicularly to each o ther, form ing edge-to-face pair. It signifies the strong lim itation o… (More)

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