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(a) Hart, G. W.; Holt, G. V.; Haltiwanger, R. S. Trends Biochem. Sci. 1988, 13, 380-384.
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(a) BeMiller, J. N.; Yadav, M. P.; Kalabokis, V. N.; Myers, R. W. Carbohydr. Res. 1990, 200, 111-126.
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Kalabokis, V.N.3
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Norbeck, D.W.1
Kramer, J.B.2
Lartey, P.A.3
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12
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0015789907
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Procedures leading to C-glycosyl aldehydes: (a) Albrecht, H. P.; Repke, D. B.; Moffat, J. C. J. Org. Chem. 1973, 38, 1836-1840.
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Albrecht, H.P.1
Repke, D.B.2
Moffat, J.C.3
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(b) Kobertz, W. R.; Bertozzi, C. R.; Bednarski, M. D. Tetrahedron Lett. 1992, 33, 737-740.
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Kobertz, W.R.1
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Bednarski, M.D.3
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85054628477
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(d) Sánchez, M. E. L.; Michelet, V.; Besnier, I.; Genêt, J. P. Synlett 1994, 705-708. For synthesis of other C-glycosyl compounds, see references in the cited papers.
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Sánchez, M.E.L.1
Michelet, V.2
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(a) BeMiller, J. N., Blazis, V. J., Myers, R. W. J. Carbohydr. Chem. 1990, 9, 39-57.
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(d) Sowden, J. C.; Bowers, C. H.; Lloyd, K. O. J. Org. Chem. 1964, 29, 130-132.
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Sowden, J.C.1
Bowers, C.H.2
Lloyd, K.O.3
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(e) Petruš, L.; Bystrický, S.; Sticzay, T.; Bilik, V. Chem. Zvesti 1982, 36, 103-110.
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Bilik, V.4
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(f) Förtsch, A.; Kogelberg, H.; Köll, P. Carbohydr. Res. 1987, 164, 391-402.
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24
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(g) Petrušová, M.; Fedoronko, M.; Petruš, L. Chem. Pap. 1990, 44, 267-271.
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Petrušová, M.1
Fedoronko, M.2
Petruš, L.3
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25
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4244012251
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Surprisingly, C-glycosylnitromethanes are resistant to the Nef reaction commonly used for transformation of a nitro to a carbonyl group. A procedure for their simple conversion to C-glycosylcarboxylic (2,6-anhydroaldonic) acids has been announced: Köll P.; Dromowicz, H. Abstr. Eur. Carbohydr. Symp., 6th, Edinburgh, 1991, B56.
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Abstr. Eur. Carbohydr. Symp., 6th, Edinburgh
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Köll, P.1
Dromowicz, H.2
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26
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0008831663
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Ozonolysis of sodium nitronate forms of sugar nitro derivatives, some of which also contain the acetamido functionality, to carbonyl derivatives has been previously described, (a) Lattová, E.; Petrušová, M.; Petruǎ, L. Chem. Pap. 1991, 45, 823-827.
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(1991)
Chem. Pap.
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Lattová, E.1
Petrušová, M.2
Petruǎ, L.3
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27
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0008812665
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(b) Petrušová, M.; Lattová, E.; Matulová, M.; Petruš, L. Chem. Pap. 1992, 46, 120-123.
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Chem. Pap.
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Petrušová, M.1
Lattová, E.2
Matulová, M.3
Petruš, L.4
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28
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0008811295
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(c) Petrušová, M.; Strucková, I.; Lattová, E.; Petruš, L. Chem. Pap. 1993, 47, 195-197.
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Chem. Pap.
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Petrušová, M.1
Strucková, I.2
Lattová, E.3
Petruš, L.4
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30
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0024455777
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Ozonolysis of silyl nitronates of C-glycosylnitromethanes, not containing an acetamido functionality, to C-glycosylformaldehydes has also been described: Martin, O. R.; Khamis, F. E.; Rao, S. P. Tetrahedron Lett. 1989, 30, 6143-6146.
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Tetrahedron Lett.
, vol.30
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Martin, O.R.1
Khamis, F.E.2
Rao, S.P.3
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31
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85030000158
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note
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Optimized excess for the conditions used. An excess of NaOH was necessary to assure complete disappearance of starting 2 (cf. note 12), as a part of 3 formed was subsequently oxidized to acid 4, which consumed the extra base.
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32
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85029988387
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note
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13C NMR signal of COONa of the Na salt of 4 was observed at δ 178.3 ppm.
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33
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85030000730
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note
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3 (a side product of the ozonolysis of sodium nitronates) and acid 4. If 2 was not completely reacted in the ozonolysis step, it contaminated intermediate 5 and the other products, from which it was difficult to separate by both recrystallization and column chromatography.
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34
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85029997548
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note
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4 used as catalyst had to be added to the ice-water mixture; otherwise only underacetylated species were isolated.
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35
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85029980729
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note
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10: C, 47.76; H, 5.51; N, 6.96. Found: C, 47.39; H, 5.58; N, 6.79.
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36
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85029987651
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note
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A series of model compounds with the acetamido functionality was prepared to support the interpretation (to be published separately). It was indicated that a strain influencing the acetyl group to be eliminated had to be present. In this case, a parallel interaction with an unbonded electron pair of the ring oxygen atom seemed to provide the necessary strain.
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37
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0012900917
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3, e.g., according to: Sowden J. C.; Fischer, H. O. L. J. Am. Chem. Soc., 1947, 69, 1048-1050.
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(1947)
J. Am. Chem. Soc.
, vol.69
, pp. 1048-1050
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Sowden, J.C.1
Fischer, H.O.L.2
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39
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85029976108
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note
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7: C, 43.16; H, 6.52; N, 10.07. Found: C, 42.86; H, 6.77; N, 9.84.
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