2.6- Dideoxy-3-0-methyl-ribo-hexose

C7H13N02 stachydrine 471-87-4 23.64 1.0259 2 11944 C7H1404 2,6-dideoxy-3-0-methyl-ribo-hexose 579-04-4 21.50 1.0845 2... 

Cladinose 2,6-Dideoxy-3-C-methyl-3-Omethyl- L-ribo-hexose... 

Residue present in Leucomycin Ai and other leucomycins. Oil. Bpi., 115-116°. 3-Me 2,6-Dideoxy-3-C-methyl-3-0-methyl-L-xibo-hexose. 2,6-Dideoxy-3-C,3-0-dimethyl-L-ribo-hexose. 

D-Glucopyranosyl-( 1 ->4)- -D-glucopyr-anosyl- (1 ->4) -2,6-dideoxy-3-0-methyl-D-ribo-hexose. P-D-Glucopyranosyl-(1 4)-fS-D-glucopyranosyl- (1 ->4) -p-D-cymarose... 

Mixtures of 2,6-dideoxy-3-0-methyl-DL-lyxo-, -arabino-, -xylo-, and -ribo-hexose dimethyl acetals, obtained by addition of methyl vinyl ether to but-2-enal dimethyl acetal followed by oxidation with potassium permanganate or perbenzoic acid, were separated by preparative g.l.c. of their diacetates. The parent dimethyl acetals were obtained by deacetylation. 1-Phenylethylidene acetals (9) - (H)... 

There has been substantial activity in the synthesis of 3-amino-2,3,6-trideoxy-hexoses and their di-A-methyl derivatives as a result of their wide occurrence in antibiotics. In a paper of substantial proportions, Bartner et alP have synthesized by standard reactions all four possible methyl 2,3,6-dideoxy-3-dimethylamino-a-D-hexopyranosides (and some /3-anomers) as well as the corresponding L-ribo isomer (L-megosaminide). Syntheses have been reported for D-ristosamine (3-amino-2,3,6-trideoxy-D-rz7 o-hexose) from methyl 2-deoxy-D-amfcmo-hexo-pyranoside and of the isomeric 3-amino-2,3,6-trideoxy-L-Jcy/o-hexose (1) from methyl 2,6-dideoxy-L- mZ>mo-hexopyranoside, using standard sequences involving azidej displacement of sulphonate esters for introducing the nitrogen. 

The total synthesis of all four 3,6-dideoxy-DL-hexoses and all four 3-deoxy-DL-hexoses has been achieved by stereospecific hydroxylations of butyl 2-acetoxy-tra j -hex-4-enoate and butyl 2-acetoxy-6-hydroxy-tran5-hex-4-enoate, respectively. In an alternative synthesis 3,6-dideoxy-DL-arabino- and -DL-ribo-hexopyranoses were prepared from the Diels-Alder adduct derived from methyl... 

The trisaccharide component of the antibiotic gonefiomycin has been shown to consist of two molecules of 2,6-dideoxy-3-0-methyl-L-(yxo-hexose, separated by one of the h-ribo-tsaiBaer A series of communications have repotted details of the bios3mthesis of ascarylose (3,6-dideoxy-L-arubino-hexopyranose), as its cytidine dijdiosphate conjugate, in Yersinia pseudotuberculosis, whoe ascarylose occurs in the O-antigen. 3-26... 

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