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4
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33645370801
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note
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The thiostrepton family of peptide antibiotics, see Refs. 1 and 2.
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6
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85007203336
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K.C. Nicolaou, B.S. Safina, C. Funke, M. Zak, and F.J. Zécri Angew. Chem., Int. Ed. 41 2002 1937 1940
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0037014040
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K.C. Nicolaou, M. Nevalainen, B.S. Safina, M. Zak, and S. Bulat Angew. Chem., Int. Ed. 41 2002 1941 1945
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Nicolaou, K.C.1
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8
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0043031383
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K.C. Nicolaou, M. Nevalainen, M. Zak, S. Bulat, M. Bella, and B.S. Safina Angew. Chem., Int. Ed. 42 2003 3418 3424
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9
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4944238016
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K.C. Nicolaou, B.S. Safina, M. Zak, A.A. Estrada, and S.H. Lee Angew. Chem., Int. Ed. 43 2004 5087 5092
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10
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4944267509
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K.C. Nicolaou, M. Zak, B.S. Safina, S.H. Lee, and A.A. Estrada Angew. Chem., Int. Ed. 43 2004 5092 5097
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11
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33645335522
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note
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Recently, a total synthesis of thiostrepton has appeared; see Refs. 5e and 5f.
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12
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23844481247
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doi:10.1016/j.tetlet.2005.07.122
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Mori, T.; Tohmiya, H.; Satouchi, Y.; Higashibayashi, S.; Hashimoto, K.; Nakata, M, see following letter, Tetrahedron Lett. 2005, 46, doi:10.1016/j.tetlet.2005.07.122.
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13
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33645332133
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note
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10 [ α ] D 20 -79 (c 1, EtOH)].
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14
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0001627583
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M. Bodanszky, J. Fried, J.T. Sheehan, N.J. Williams, J. Alicino, A.I. Cohen, B.T. Keeler, and C.A. Birkhimer J. Am. Chem. Soc. 86 1964 2478 2490
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84918191209
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It has been reported that 2-picoline N-oxide was transformed with tosyl chloride into 2-chloromethylpyridine via 2-tosyloxymethylpyridine, see: E. Matsumura Nippon Kagaku Kaishi 74 1953 363 364
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Matsumura, E.1
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0000998752
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2O with 2,6-dimethyl- and 2,4,6-trimethylpyridine produced compounds in which a methyl hydrogen was replaced by either a trifluoromethyl or a [(trifluoromethyl) sulfinyl]oxy group, see: R.W. Binkley, and M.G. Ambrose J. Org. Chem. 48 1983 1776 1777
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Larrow, J.F.1
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34
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33645348550
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note
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The enantiomeric excess was not optimized. It was determined by chiral HPLC analysis (Daicel Chiralcel OD column, 4.6 x 250 mm, 90:10 hexane-IPA; 1 mL/min, 254 nm, t = 20.6 min; enantiomer of 19, t = 30.8 min).
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35
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33645342786
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note
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Recrystallization of 21 from 1:3 dioxane-hexane twice afforded crystals suitable for X-ray crystallographic analysis. Crystallographic data for 21 have been deposited with the Cambridge Crystallographic Data Centre with number 279853.
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-
-
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36
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33645353653
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note
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The fact that the compound 10 derived from 9 was identical with that derived from methyl ketone 21 confirmed the structure of 9 which had not been determined.
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-
-
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37
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33645328328
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note
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This argument is supported from X-ray crystallographic analysis of 21 (Fig. 2).
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39
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0028006935
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K. Takeda, A. Akiyama, H. Nakamura, S. Takizawa, Y. Mizuno, H. Takayanagi, and Y. Harigaya Synthesis 1994 1063 1066
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Harigaya, Y.7
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