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Keywords:

  • distance constraints;
  • EASY ROESY;
  • NMR spectroscopy;
  • structure elucidation
Thumbnail image of graphical abstract

Estimates of intramolecular distances are essential for structure determination (see figure). For medium-sized molecules, ROESY NMR spectroscopy is the method of choice for obtaining distances. However, the integration of ROESY cross-peaks is problematic, owing to the offset dependence of the integrals and/or TOCSY artefacts. We here present EASY ROESY (Efficient Adiabatic SYmmetrized ROESY), which yields reliable intramolecular distances without a sample-specific setup.