On two dimensional maps of <sup>1</sup>H-<sup>13</sup>C correlation spectroscopy (H-C COSY) analysis for the mannan of <i>Candida tropicalis</i>, nine cross peaks of anomeric proton...On two dimensional maps of <sup>1</sup>H-<sup>13</sup>C correlation spectroscopy (H-C COSY) analysis for the mannan of <i>Candida tropicalis</i>, nine cross peaks of anomeric proton and carbon were useful for the purpose of obtaining information on the chemical structure of this molecule. Namely, the mannans was comb-like structure constructed with the linear <i>α</i>-1,6-linked polymannnosyl backbone and several oligomannnosyl side chains composed of <i>α</i>-1,2-, <i>α</i>-1,3-, and <i>β</i>-1,2-linkages. Therefore, in the structural investigation of comb-like mannan, two-dimensional H-C COSY analysis is as useful as two-dimensional nuclear Hartmann-Hahn (HOHAHA) analysis.展开更多
文摘On two dimensional maps of <sup>1</sup>H-<sup>13</sup>C correlation spectroscopy (H-C COSY) analysis for the mannan of <i>Candida tropicalis</i>, nine cross peaks of anomeric proton and carbon were useful for the purpose of obtaining information on the chemical structure of this molecule. Namely, the mannans was comb-like structure constructed with the linear <i>α</i>-1,6-linked polymannnosyl backbone and several oligomannnosyl side chains composed of <i>α</i>-1,2-, <i>α</i>-1,3-, and <i>β</i>-1,2-linkages. Therefore, in the structural investigation of comb-like mannan, two-dimensional H-C COSY analysis is as useful as two-dimensional nuclear Hartmann-Hahn (HOHAHA) analysis.
