三种缩水蔗糖衍生物的NMR研究及结构确证

采用¹H NMR、¹³C NMR、DEPT及二维谱¹H-¹H COSY、HSQC、HMBC和HRMS对1′, 4′∶3′, 6′-二缩水-4-氯-4-脱氧半乳蔗糖、3, 6∶1′, 4′3′, 6′-三缩水-4-氯-4-脱氧半乳蔗糖和3, 6-缩水-4, 1′, 6′-三氯-4, 1′, 6′-三脱氧半乳蔗糖的结构进行了研究和确证，并对它们的¹H、¹³C NMR全谱给予了准确归属.

Structure Determination of Three Anhydrosucrose Derivatives by NMR

The structures of 1, 4∶3, 6-dianhydro-β-D- fructofuranosyl 4-chloro-4-deoxy-α-D-galactopyranoside( 1),  1, 4∶3, 6-dianhydro-β-D-fructofuranosyl 3, 6-anhydro-4-chloro-4-deoxy-α-D-galactopyranoside (2) and 1, 6-dichloro-1, 6-dideoxy-β-D-fructofuranosyl 3, 6-anhydro-4-chloro-4-deoxy-α-D-galactopyranoside (3) were elucidated using 1D and 2D NMR spectroscopy (¹H NMR,  ¹³C NMR,  DEPT-135,  ¹H-¹H COSY,  HSQC,  HMBC) and HRMS spectra. ¹H and ¹³C chemical shifts of these compounds were assigned.