a selected salep phosphate
in the range between 0 and 5 ppm. Passauer et al. [22] by
means of 2D 1H/31P HMBC NMR spectroscopy and SPARTAN™ software
calculations for a-methyl glucoside and its 2-O-, 3-O-, and 6-
O- phosphates as model compounds have shown that the signal at
3.9 ppm in 31P NMR spectrum is due to the primary phosphate
group at the C-6 position of the anyhdroglucose units