Lyxoside

Methyl lyxoside Lyxitol Lyxonic acid Lactone Lyxuronic acid Methyl ester Deoxy 

Ishell HS, Frush HL (1940) a- and p-methyl lyxosides, mannosides, gulosides and heptosides of like configuration. J Res Natl Bur Stand 24 125-151 

Reduction of the pentosid-2-ulose (8) by sodium borohydride in ethanol gave the dimer (9) as the major product, the expected lyxoside (10) being only a minor product (Scheme 4), whereas the j8-anomer of (8) gave only the j8- 

A number of modified sugars have been obtained by using the aforementioned approach. For example, methyl 4-0-methyl-5,5-di-C-methyl-p-DL-lyxoside, the glycoside of the sugar component of the antibiotic novobiocin, was synthesized with high selectivity from 2-(2-furyl)propan-2-ol. Methyl 6-acetamido-6-deoxy and 6-deoxy-6-nitro-a-DL-mannopyranosides were prepared from suitably substituted 2-furylethanols. 1,4-Addition of an active methylene compounds to 

Chart V summarizes the reactions of 2,3- and 3,4-anhydropento-pyranosides. Buchanan and coworkers have shown144 that the methyl 2,3-anhydro-a(and /3)-lyxosides, and 3,4-anhydro-/3-L-arabinoside adopt that half-chair conformation (5H0) in which the anomeric meth-oxyl group is axially attached this indicates the importance of the ano- 

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