HETLOC experiment

Alternatively, ID analogues of 2D HSQC, HSQC-TOCSY, and HETLOC experiments and a selective version of/ -resolved spectroscopy using selective excitation and/or chemical shift filtering of proton or carbon resonances may be used for the measurement of coupling constants 49,51-59 Band-selective decoupling of some of the protons during acquisition leads to reduced multiplicity, and so facilitates the multiplet analysis.56... 

Finally, Moore and co-workersreported using a combination of HETLOC and HSQMBC experiments to measure the long-range heteronuclear coupling constants of apratoxin A (30), a cytotoxin from the marine cyanobacterium Lyngba majuscula. 

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