Deoxy sugars definition

Unsubstituted acetals and methyl glycosides of deoxy sugars have also been investigated by mass spectrometry.2498 357 It is possible to differentiate between 3-, 5-, and 6-deoxy-l, 2-O-isopropylidenehexofuranoses from their mass spectra. The differences in the mass spectra of methyl 3- and 4-deoxy-pentopyranosides are also sufficient for their characterization. In the spectra of 2- and 3-deoxypentofuranosides, however, the differences reside in the relative intensities of certain peaks and do not allow definitive distinctions. 

Streptose is the first branched-chain sugar to have been identified as a component of a biological compound produced by a microorganism. This dicarbonyl sugar is known only in its derivatives. The chemistry of streptose and streptomycin has been lucidly reviewed by Lemieux and Wolfrom.1 In this article, it was noted that streptose must be either 5-deoxy-3-C -formyl-L-ribose or 5-deoxy-3-C-formyl-L-lyxose. Since then, the presence of the latter configuration (XXXIV) has been definitely established by Wolfrom and DeWalt,66 who found that N-acetyltetrahydrostreptobi-... 

The 2,3-dideoxy sugars have received the most attention among the remaining classes of dideoxy sugars. This interest stems from the fact that ethyl 2,3-dideoxy-a-D-er2/fAro-hexopyrano8ide 07 is a readily available compound it was found to be more labile to N hydrochloric acid at 18° than the 2-deoxy analog, and it was concluded 08 that an increase in the number of methylene groups in the chain definitely increases the lability of the... 

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