Tietze LF, Fischer R, Lögers M, Beller M. Stereoselective synthesis of 1,1-dialkyl-1-methoxymethyl glucosides (acetal-glucosides).
Carbohydr Res 1989;
194:155-62. [PMID:
2620298 DOI:
10.1016/0008-6215(89)85015-3]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The synthesis is described of highly acid-sensitive, 1,1-dialkyl-1-methoxymethyl glucosides (acetal-glucosides) as potential anti-cancer prodrugs. Reaction of 2,3,4,6-tetra-O-acetyl-1-O-trimethylsilyl-beta-D-glucopyranose (4) severally with various aliphatic and alicyclic ketones and methyl trimethylsilyl ether, in the presence of catalytic amounts of trimethylsilyl trifluoromethanesulfonate, afforded the corresponding acetylated acetal-beta-glucosides, e.g., acetone gave 1-methoxy-1-methylethyl 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside (7a). Likewise the alpha-anomer (8a) of 7a was obtained from the alpha-anomer of 4. Deacetylation of the tetra-acetates then gave the acetal-alpha- and -beta-glucosides.
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