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For example: (a) I. R. Baxendale, A.-L. Lee and S. V. Ley, J. Chem. Soc., Perkin Trans. 1, 2002, 1850; (b) I. R. Baxendale, S. V. Ley, M. Nessi and C. Piutti, Tetrahedron, 2002, 6285; (c) M. Caldarelli, J. Habermann and S. V. Ley, Bioorg. Med. Chem. Lett., 1999, 9, 2049; (d) A. Lee and J. A. Ellman, Org. Lett., 2001, 3, 3707; (e) I. R. Baxendale and S. V. Ley, Bioorg. Med. Chem. Lett., 2000, 10, 1983.
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Baxendale, I.R.1
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21
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0037025957
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For example: (a) I. R. Baxendale, A.-L. Lee and S. V. Ley, J. Chem. Soc., Perkin Trans. 1, 2002, 1850; (b) I. R. Baxendale, S. V. Ley, M. Nessi and C. Piutti, Tetrahedron, 2002, 6285; (c) M. Caldarelli, J. Habermann and S. V. Ley, Bioorg. Med. Chem. Lett., 1999, 9, 2049; (d) A. Lee and J. A. Ellman, Org. Lett., 2001, 3, 3707; (e) I. R. Baxendale and S. V. Ley, Bioorg. Med. Chem. Lett., 2000, 10, 1983.
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Tetrahedron
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Baxendale, I.R.1
Ley, S.V.2
Nessi, M.3
Piutti, C.4
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22
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0033584197
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For example: (a) I. R. Baxendale, A.-L. Lee and S. V. Ley, J. Chem. Soc., Perkin Trans. 1, 2002, 1850; (b) I. R. Baxendale, S. V. Ley, M. Nessi and C. Piutti, Tetrahedron, 2002, 6285; (c) M. Caldarelli, J. Habermann and S. V. Ley, Bioorg. Med. Chem. Lett., 1999, 9, 2049; (d) A. Lee and J. A. Ellman, Org. Lett., 2001, 3, 3707; (e) I. R. Baxendale and S. V. Ley, Bioorg. Med. Chem. Lett., 2000, 10, 1983.
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Caldarelli, M.1
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23
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0035891721
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For example: (a) I. R. Baxendale, A.-L. Lee and S. V. Ley, J. Chem. Soc., Perkin Trans. 1, 2002, 1850; (b) I. R. Baxendale, S. V. Ley, M. Nessi and C. Piutti, Tetrahedron, 2002, 6285; (c) M. Caldarelli, J. Habermann and S. V. Ley, Bioorg. Med. Chem. Lett., 1999, 9, 2049; (d) A. Lee and J. A. Ellman, Org. Lett., 2001, 3, 3707; (e) I. R. Baxendale and S. V. Ley, Bioorg. Med. Chem. Lett., 2000, 10, 1983.
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Org. Lett.
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Lee, A.1
Ellman, J.A.2
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24
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0034605211
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For example: (a) I. R. Baxendale, A.-L. Lee and S. V. Ley, J. Chem. Soc., Perkin Trans. 1, 2002, 1850; (b) I. R. Baxendale, S. V. Ley, M. Nessi and C. Piutti, Tetrahedron, 2002, 6285; (c) M. Caldarelli, J. Habermann and S. V. Ley, Bioorg. Med. Chem. Lett., 1999, 9, 2049; (d) A. Lee and J. A. Ellman, Org. Lett., 2001, 3, 3707; (e) I. R. Baxendale and S. V. Ley, Bioorg. Med. Chem. Lett., 2000, 10, 1983.
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Bioorg. Med. Chem. Lett.
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Baxendale, I.R.1
Ley, S.V.2
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26
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0347601187
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note
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An alternative, more advanced, starting material would have been 4-hydroxybenzaldehyde. However, in our hands, this material was found to undergo a Cannizzaro reaction under strongly basic conditions to afford a mixture of the corresponding alcohol and carboxylic acid products.
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27
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0035942513
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C. P. Miller, M. D. Collini, B. D. Tran, H. A. Harris, Y. P. Kharode, J. T. Marzolf, R. A. Moran, R. A. Henderson, R. H. W. Bender, R. J. Unwalla, L. M. Greenberger, J. P. Yardley, M. A. Abou-Gharbia, C. R. Lyttle and B. S. Komm, J. Med. Chem., 2001, 44, 1654.
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J. Med. Chem.
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Miller, C.P.1
Collini, M.D.2
Tran, B.D.3
Harris, H.A.4
Kharode, Y.P.5
Marzolf, J.T.6
Moran, R.A.7
Henderson, R.A.8
Bender, R.H.W.9
Unwalla, R.J.10
Greenberger, L.M.11
Yardley, J.P.12
Abou-Gharbia, M.A.13
Lyttle, C.R.14
Komm, B.S.15
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28
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0348231207
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note
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-1 was obtained from Fluka Cat. No. 20026.
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29
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0348231208
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note
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MP-carbonate was obtained from Argonaut Technologies Inc. Cat. No. 800268.
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30
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0346970206
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note
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Isolute™ SCX-2 (alkylsulfonic acid) cartridges were obtained from Jones Chromatography (e.g. Cat. No. 532-0100-C).
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31
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0346970204
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note
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Chromic acid on Amberlyst A-26 was obtained from Sigma-Aldrich Cat. No. 35, 982-3.
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32
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0033578612
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Piperazinomethyl polystyrene was obtained from NovaBiochem Cat. No. 01-64-0310; cf. J. Simpson, D. L. Rathbone and D. C. Billington, Tetrahedron Lett., 1999, 40, 7031.
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(1999)
Tetrahedron Lett.
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Simpson, J.1
Rathbone, D.L.2
Billington, D.C.3
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33
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0348231206
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note
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We found that this 1,4-reduction could also be mediated using aqueous sodium dithionite, however the procedure proved to be difficult to reproduce reliably and therefore catalytic hydrogenation under forcing conditions was preferred.
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34
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0346970203
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note
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According to the reported procedure in ref. 2b, Rosiglitazone was obtained in 31% overall yield as compared to 46% overall yield in the present synthesis.
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35
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0346970205
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note
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1H NMR spectroscopy was more indicative of the purity of synthetic intermediates than LC-MS since many of the compounds are quite polar and tend to elute close to the origin using conventional RP-HPLC methods and solvent gradients.
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