guided exercise
A cyclic dipeptide from 1D and 2D NMR
Build a defensible structure from a proton spectrum, J-modulated carbon data, COSY, edited HSQC, and HMBC before comparing field strengths.
Exercises / Work from evidence
Commit to the evidence
before seeing the structure.
Each exercise presents analytical observations in stages. The reviewed structure and assignment appear only at the end, after you have made your own proposal.