Cross peaks connecting anomeric resonances

Identification of residue B as rhamno p is typical of the utilization of HOHAHA. Magnetization transfer from the anomeric proton B led to the appearance of only one cross-peak, the H-l-H-2 signal, but transfer from one of the well-resolved methyl resonances at 1.351 ppm disclosed the entire connectivity up to the same H-2 resonance. This showed that B was one of the rhamnose units, and gave the chemical shifts of all its protons. The NOESY showed the proximity of H-1 with H-2, H-3, and H-5, compatible only with the f3-rhamno configuration. 

---