Synthesis of a carba-sugar analog of trehalosamine, W9-(l2,4/3,W -amino-3,4-dihydroxy+hydroxymethyl-lcyclohexyl] a-D-glucopyranoside, and a revised synthesis of its j3 anomer\*
Synthesis of [(1S)-(1,2,4/3,5)-2-amino-3,4-dihydroxy-5-(hydroxymethyl)-1-cyclohexyl] α-d-glucopyranoside
✍ Scribed by Seiichiro Ogawa; Tatsuhi Toyokuni; Yoshio Hattori; Taisuke Nose; Tetsuo Suami
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 469 KB
- Volume
- 146
- Category
- Article
- ISSN
- 0008-6215
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✦ Synopsis
As part of a study of the elucidation of biochemical and biological properties of pseudo-sugars', replacement of the hexopyranosyl residues of biologically active disaccharides with structurally related pseudo-sugars has been investigated. Trehalosamine* (1) is an aminoglycoside antibiotic3 produced by Streptomyces lavendulae. It is an cu,cu-(l+l)-linked disaccharide composed of D-glucose and 2-amino-2-deoxy-D-glucose. Three related compounds, the 3-amino-3-deoxy4 1 Treholosamlne A and 4-amino-4-deoxy isomers5, and 2-amino-2-deoxy-a-D-glucopyranosyl U-D-mannopyranoside6, have thus far been shown to possess antibacterial activity. The synthesis and biological activities of analogous disaccharides have been extensively studied by Baer and his co-workers7-9. Three types of pseudo-sugar analogues of trehalosamine may be considered: *Synthesis of Pseudo-trehalosamine and Related Pseudo-disaccharides. Part I.
📜 SIMILAR VOLUMES
All the theoretically possible, four diastereoisomeric pairs, qcy (2A and 2B), cr,p (3A and 3B), P,(Y (4A and 4B), and &/3 (5A and 5B), of pseudo-trehalose, composed of D-glucopyranose and pseudo-D-or L-glucopyranose, have been synthesiscd by coupling of the appropriately protected pseudo-a-(6) and
Isopropylidenation of ~~-(1,2/3,4,5)-5-hydroxymethyl-l,2,3,4-cyclohexanetetrol (1) with 2,2-dimethoxypropane in N,N-dimethylformamide in the presence of toluene-p-sulfonic acid gave the 1,2:3,4-, 1,2:4,7-, and 2,3:4,7-di-O-isopropylidene derivatives. Several C-7 substituted derivatives of 1 of biolo
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