1-Seleno-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose (1). Yield was 67.5%, mp 94-95oC, Rf 0.9 (hexane–
ethyl acetate, 6:4), [α]D +21o (c 0.62, chloroform). IR spectrum, ν, cm-1: 2580 (Se-H); 1720 (C=O); 1010, 1040 (C–
O–C). Found, %: C 40.02; H 5.11. C14H20O9Se. Calculated, %: C 40.87; H 4.6.
1-Seleno-R3Si-2,3,4,6-tetra-O-acetyl-β-D-glucopyranoses 2, 3 and 1-Seleno-R2As-2,3,4,6-tetra-
O-acetyl-β-D-glucopyranoses 4, 5 (General Method). An ether solution of the appropriate R3SiCl or R2AsCl
(1.8 mmol) was added dropwise with stirring and heating (50-60oC) to a solution of selenoglucose 1 (0.62 g,
1.4 mmol) in chloroform (25 ml) and triethylamine (0.32 ml). Stirring was continued for 2 h (compound 2) or 1 h
(compound 3) and left for 18 h at ~20oC (compounds 4 and 5 were left without additional stirring). The separated
solid triethylamine hydrochloride was filtered off, and washed with ether. The combined filtrates were treated with
activated carbon, and concentrated in vacuum until the start of crystallization. The precipitated crystals were filtered
off and recrystallized twice from ethanol. Chromatographically pure compounds were obtained.
1-Selenotrimethylsilyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose (2). White crystals, yield 0.44 g
(60%); mp 96-97oC, [α]D +13.4o (c 0.32, chloroform), Rf 0.51 (benzene–dioxane, 3:1). 13C NMR spectrum, δ,
ppm: 91.8 (C-1); 84.7 (C-2); 74.5 (C-3); 70.8 (C-4); 71.9 (C-5); 69.2 (C-6); 168.2-170.6 (C=O); 10.2-27.5
(CH3). Found, %: C 42.60; H 6.00; Si 6.10. C17H28O9SeSi. Calculated, %: C 42.20; H 5.80; Si 5.80.
1-Selenotriphenylsilyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose (3). Yield 0.63
g (63%); mp
192-193oC, Rf 0.63 (chloroform–methanol, 4:1), [α]D +22.7o (c 0.4, chloroform). 13C NMR spectrum, δ, ppm: 95.5
(C-1); 71.2 (C-2); 73.6 (C-3); 66.8 (C-4); 77.0 (C-5); 62.5 (C-6); 170.4-175.6 (C=O); 20.6-29.7 (CH3); 127.1-133.6
(C6H5). Found, %: C 57.40; H 5.10; Si 4.23. C32H34O9SeSi. Calculated, %: C 57.40; H 5.08; Si 4.20.
1-Selenodibutylarsinyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose (4). Yield 0.82 g (55%); mp
13
114-115oC, Rf 0.82 (petroleum ether–benzene, 1:1), [α]D +20.1o (c 0.3, chloroform). C NMR spectrum, δ, ppm:
92.5 (C-1); 71.2 (C-2); 73.4 (C-3); 69.0 (C-4); 76.8 (C-5); 62.8 (C-6); 167.5-172.5 (C=O); 35.4-42.0 (CH2);
13.6-22.2 (CH3). Found, %: C 44.35; H 6.20; As 14.11. C22H37AsO9Se. Calculated, %: C 44.10; H 6.18; As 12.50.
1-Selenodiphenylarsinyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose (5). Yield 0.49 g (51%); mp
131-132.5oC, Rf 0.31 (petroleum ether–benzene, 1:1), [α]D +15.7o (c 0.47, chloroform). 13C NMR spectrum, δ,
ppm: 95.5 (C-1); 71.2 (C-2); 73.5 (C-3); 68.8 (C-4); 73.7 (C-5); 62.5 (C-6); 168.0-171.0 (C=O); 20.0-21.9
(CH3); 136.0-137.0 (C6H5). Found, %: C 49.20; H 4.90; As 12.40. C26H29AsO9Se. Calculated, %: C 48.80;
H 4.50; As 11.70.
Determination of Bactericidal Activity. As test microorganisms actinomycetes producing
physiologically active substances were used, viz. Actinomyces griseus, Actinomyces streptomicini, and the
phytogenic bacterium Xanthomonas compestris. Solid nutrient media were used for incubating test organisms:
Krasil'nikov medium (1 g KNO3, 0.5 g K2HPO4, 0.5 g NaCl, 0.5 g MgSO4, traces of FeSO4, 1 g CaCO3, 20 g
starch, water) was used for actinomycetes and meat-peptone agar (MPA) for bacteria. The effect of the
synthesized compounds on the growth and development of microorganisms was studied by the Egorov method
(alveolar method) [5]. The size of the toxic action was determined from the sterility zone around a hole. A
solvent mixture of ethyl alcohol–chloroform, 1:1 served as control. Substances of concentration 1.0 and 0.1 g/l
were placed in the hole. The results of the investigations are given in Table 1.
REFERENCES
1.
E. Ya. Lukevics and Z. Ya. Zelmene, Biological Activity of Silicon Compounds [in Russian], Riga
(1984), 301 pp.
2.
3.
4.
5.
M. A. Ignatenko, Khim.-farm. Zh., 28, 401 (1984).
L. P. Asatiani and Z. Sh. Lomtatidze, Khim.-farm. Zh., 28, 576 (1984).
Z. Sh. Lomtatidze and K. A. Laperashvili, Gruz. Mikrobiol. Obshchest., 2, 93 (1992).
D. S. Egorov, Handbook of Microbiology [in Russian], Izd. MGU, Moscow (1976), p. 245.
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