Synthesen DER Glycoside Von L-Nogalose und D-Evalose

Abstract
By stereospecific methylation at C-3 the lyxp-hexo-pyranoside-4-ulose is transformed into compound 1a. Mild acid cleavage of the isopropylidene groups and subsequent reduction proceeds to the 3-C-methyl manno-pyranoside 2a. This represents an efficient and fast access to D-evaloside or following permethylation to L-nogaloside.

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