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Stereospecific assignment of exocyclic methylene protons in panose by 13 C‐filtered 1D TOCSY
Author(s) -
Poppe Leszek,
Sheng Shuqun,
van Halbeek Herman
Publication year - 1994
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260320207
Subject(s) - chemistry , stereospecificity , methylene , stereochemistry , coupling constant , disaccharide , organic chemistry , catalysis , physics , particle physics
The C‐6‐methylene protons in the internal glucosyl unit of panose, D ‐Glc‐α(1 → 6)‐ D ‐Glc‐α(1 → 4)‐ D ‐Glc(α,β), were stereospecifically assigned. The assignment strategy involved the measurement of the long‐range 3 J (C‐4, H‐6 R ) and 3 J (C‐4,H‐6 S ) coupling constants for this residue in panose, with natural 13 C isotope abundance, using a newly designed 13 C‐filtered 1D TOCSY experiment.