Conformations and conformational interconversions of diastereomeric cyclic tetraprolines.

Abstract

Cyclic tetrapeptides exclusively composed of L- and D-Pro have been studied by theoretical means (conformational searches and molecular mechanics calculations using the CHARMM program) supported by 1H-NMR spectroscopy, X-ray analysis and chiroptical measurements. We explored the entire conformational space of the diastereomers cyclo(LLLL-Pro4) (I), cyclo… (More)

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