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Alcaraz, M.; Atkinson, S.; Cornwall, P.; Foster, A. C.; Gill, D. M.; Humphries, L. A.; Keegan, P. S.; Kemp, R.; Merifield, E.; Nixon, R. A.; Noble, A. J.; O'Beirne, D.; Patel, Z. M.; Perkins, J.; Rowa, P.; Sadler, P.; Singleton, J. T.; Tornos, J.; Watts, A. J.; Woodland, I. A. Org. Process Res. Dev. 2005, 9, 555.
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more..
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9
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77957037558
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Oxindole Alkaloids
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Manske, R. H. F, Ed, Academic Press: New York
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(b) Bindra, J. S. Oxindole Alkaloids, In The Alkaloids - Chemistry and Physiology, Vol. 14; Manske, R. H. F., Ed.; Academic Press: New York, 1973, 83.
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Bindra, J.S.1
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10
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0242468129
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Abourriche, A.; Abboud, Y.; Maoufoud, S.; Mohou, H.; Seffaj, T.; Charrouf, M.; Chaib, N.; Benamara, A.; Bontemps, N.; Francisco, C. Farmaco 2003, 58, 1351.
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Abourriche, A.1
Abboud, Y.2
Maoufoud, S.3
Mohou, H.4
Seffaj, T.5
Charrouf, M.6
Chaib, N.7
Benamara, A.8
Bontemps, N.9
Francisco, C.10
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11
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0030037137
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Isolation: Cui, C. B.; Kakeya, H.; Okada, G.; Onose, R.; Osada, H. J. Antibiot. 1996, 49, 527.
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(a) Isolation: Cui, C. B.; Kakeya, H.; Okada, G.; Onose, R.; Osada, H. J. Antibiot. 1996, 49, 527.
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12
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0030599282
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Structure: Cui, C.; Kakeya, H.; Osada, H. Tetrahedron 1996, 52, 12651.
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(b) Structure: Cui, C.; Kakeya, H.; Osada, H. Tetrahedron 1996, 52, 12651.
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13
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0032482105
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Total syntheses: (c) Edmonson, S.; Danishefsky, S. J. Angew. Chem. Int. Ed. 1998, 37, 1138.
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Total syntheses: (c) Edmonson, S.; Danishefsky, S. J. Angew. Chem. Int. Ed. 1998, 37, 1138.
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17
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0033577262
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Cytotoxic activity: Edmondson, S. E.; Danishefsky, S. J.; Sepp-Lorenzino, L.; Rosen, N. J. Am. Chem. Soc. 1999, 121, 2147.
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(g) Cytotoxic activity: Edmondson, S. E.; Danishefsky, S. J.; Sepp-Lorenzino, L.; Rosen, N. J. Am. Chem. Soc. 1999, 121, 2147.
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18
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11844260494
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For reviews of the chemistry of the welwitindolinones, see: a
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For reviews of the chemistry of the welwitindolinones, see: (a) Avendaño, C.; Menéndez, J. C. Curr. Org. Synth. 2004, 1, 65.
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Curr. Org. Synth
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Avendaño, C.1
Menéndez, J.C.2
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19
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36549051446
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In Bioactive Heterocycles V
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Springer: Berlin/Heidelberg
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(b) Menéndez, J. C. In Bioactive Heterocycles V, In Topics in Heterocyclic Chemistry, Vol. 11; Springer: Berlin/Heidelberg, 2007, 63.
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Topics in Heterocyclic Chemistry
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Menéndez, J.C.1
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21
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0026601334
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(b) Underwood, R.; Prasad, K.; Repic, O.; Hardtmann, G. Synth. Commun. 1992, 22, 343.
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Synth. Commun
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Underwood, R.1
Prasad, K.2
Repic, O.3
Hardtmann, G.4
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22
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0027491837
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(c) Cushing, T. D.; Sanz-Cervera, J. F.; Williams, R. M. J. Am. Chem. Soc. 1993, 115, 9323.
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J. Am. Chem. Soc
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Cushing, T.D.1
Sanz-Cervera, J.F.2
Williams, R.M.3
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23
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21344494223
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For a review of the synthesis of 2-oxindoles, see
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For a review of the synthesis of 2-oxindoles, see: Karp, G. M. Org. Prep. Proced. Int. 1993, 25, 481.
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(1993)
Org. Prep. Proced. Int
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Karp, G.M.1
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24
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0033546353
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Bailey, P. D.; Cochrane, P. J.; Irvine, F.; Morgan, K. M.; Pearson, D. P. J.; Veal, K. T. Tetrahedron Lett. 1999, 40, 4593.
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Tetrahedron Lett
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Bailey, P.D.1
Cochrane, P.J.2
Irvine, F.3
Morgan, K.M.4
Pearson, D.P.J.5
Veal, K.T.6
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25
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0001875106
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Some of these compounds are known in the literature. See
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Some of these compounds are known in the literature. See: Harrington, P. E.; Kerr, M. A. Synlett 1996, 1047.
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(1996)
Synlett
, pp. 1047
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Harrington, P.E.1
Kerr, M.A.2
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27
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36549025238
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Representative Experimental Procedure To a solution of oxalyl chloride (5 equiv) in anhyd CH2Cl2 (10 mL, at -78°C under an argon atmophere, was added DMSO (7 equiv, The solution was stirred for ca. 10 min, until effervescence ceased. A solution of alcohol 6b (350 mg, 0.77 mmol) in anhyd CH2Cl2 (3 mL) was added dropwise via cannula, and the red solution was stirred for 10 min at -78°C. Then, Et3N (10 equiv) was added and the solution was left to warm to r.t. for 20 min, while stirred. The reaction mixture was diluted with CH 2Cl2 (20 mL) and washed with sat. aq NH4Cl (3 x 20 mL, The organic layer was dried (Na2SO4) and evaporated, and the residue was purified by rapid chromatography on silica gel, eluting with PE-EtOAc mixtures (gradient from 20:1 to 5:1, to yield compound 8b 357 mg, 90, Slower chromatographic separation may lead to considerab
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4) and evaporated, and the residue was purified by rapid chromatography on silica gel, eluting with PE-EtOAc mixtures (gradient from 20:1 to 5:1), to yield compound 8b (357 mg, 90%). Slower chromatographic separation may lead to considerable amounts of decomposition products, specially from hydrolysis of the terminal chloromethylene moiety.
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28
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36549069537
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Data for Representative Compounds 8 Compound 8b: IR (film on NaCl, 1731.6 (C=O, 1112.9 (C-O) cm-1. 1H NMR (250 MHz, CDCl3, δ, 7.73-7.67 (m, 4 H, H-2″,6″, 7.50-7.35 (m, 8 H, H-5,6,3″,4″,5″, 6.77 (d, 1 H, J, 7.6 Hz, H-7, 5.07 (d, 1 H, J, 14.2 Hz, CH2O, 4.90 (d, 1 H, J, 14.2 Hz, CH2O, 3.31-3.13 (m, 2 H, H-3′, 3.21 (s, 3 H, NCH3, 2.40-2.17 (m, 2 H, H-1′, 1.43-1.28 (m, 2 H, H-2′, 1.12 [s, 9 H, C(CH3)3, 13C NMR (62.9 MHz, CDCl3, δ, 173.2 (C-2, 142.4 (C-7a, 139.1 (C-4, 135.5 (C-2″,6″, 133.0 (C-1″, 130.5 (C-6, 129.9 (C-4″, 127.8 (C-3″,5″, 123.2 (C-3a, 121.6 (C-5, 107.4 (C-7, 64.4 (C-3, 60.9 (CH2O, 43.6 (C-3′, 35.6 (C-1′, 27.7 (C-2′, 26.85 (NCH3, 26.75 [C(CH3) 3, 19.3
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2: C, 54.18; H, 5.25; N, 4.86. Found: C, 53.95; H, 5.12; N, 4.75.
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29
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36549014938
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4Cl. See: (a) Hino, T.; Miura, H.; Nakagawa, T.; Murata, R.; Nakagawa, M. Heterocycles 1975, 3, 805.
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4Cl. See: (a) Hino, T.; Miura, H.; Nakagawa, T.; Murata, R.; Nakagawa, M. Heterocycles 1975, 3, 805.
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30
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0018253065
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(b) Hino, T.; Miura, H.; Murata, R.; Nakagawa, M. Chem. Pharm. Bull. 1978, 26, 3695.
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(1978)
Chem. Pharm. Bull
, vol.26
, pp. 3695
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Hino, T.1
Miura, H.2
Murata, R.3
Nakagawa, M.4
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31
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36549007742
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Data for 3-Chloro-1-methyl-3-(3-oxobutyl)oxindole IR (film on NaCl, 1728.2, 1717.0 (C=O) cm-1. 1H NMR (250 MHz, CDCl3, δ, 7.39 (d, 1 H, J, 7.6 Hz, H-4, 7.37 (t, 1 H, J, 7.6 Hz, H-6, 7.15 (t, 1 H, J, 7.6 Hz, H-5, 6.87 (d, 1 H, J, 7.6 Hz, H-7, 3.25 (s, 3 H, NCH3, 2.65-2.40 (m, 4 H, H-1′,2′, 2.11 (s, 3 H, COCH3, 13C NMR (62.9 MHz, CDCl3, δ, 206.9 (C-3′, 173.9 (C-2, 142.7 (C-7a, 130.8 (C-4, 129.8 (C-3a, 124.5 (C-6, 123.9 (C-5, 109.2 (C-7, 64.4 (C-3, 38.4 (C-2′, 33.2 (C-1′, 30.4 (COCH3, 27.0 NCH 3, MS: m/z, 251 [M, Anal. Calcd for C 13H14ClNO2: C, 62.03; H, 5.61; N, 5.56. Found: C, 62.35; H, 5.81; N, 5.62
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2: C, 62.03; H, 5.61; N, 5.56. Found: C, 62.35; H, 5.81; N, 5.62.
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32
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0018611071
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2O at -20°C for 5 h, which gave the corresponding five-membered spirolactones in yields of around 65% as mixtures of diastereomers. See: (a) Büchi, G.; DeShong, P. R.; Katsumura, S.; Sagimura, Y. J. Am. Chem. Soc. 1979, 101, 5084.
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2O at -20°C for 5 h, which gave the corresponding five-membered spirolactones in yields of around 65% as mixtures of diastereomers. See: (a) Büchi, G.; DeShong, P. R.; Katsumura, S.; Sagimura, Y. J. Am. Chem. Soc. 1979, 101, 5084.
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33
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36549058528
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For a similar reaction using a mixture of DMSO and tert-butyl bromide, see: (b) Palla, G.; Marchelli, R.; Casnati, G.; Dossena, A. Gazz. Chim. Ital. 1982, 112, 535.
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For a similar reaction using a mixture of DMSO and tert-butyl bromide, see: (b) Palla, G.; Marchelli, R.; Casnati, G.; Dossena, A. Gazz. Chim. Ital. 1982, 112, 535.
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34
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0025777180
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(c) Labroo, R. B.; Labroo, V. M.; King, M. M.; Cohen, L. A. J. Org. Chem. 1991, 56, 3637.
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J. Org. Chem
, vol.56
, pp. 3637
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Labroo, R.B.1
Labroo, V.M.2
King, M.M.3
Cohen, L.A.4
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35
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36549051448
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Indeed, compounds 8 were not obtained when oxalyl chloride was replaced by TFAA.
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Indeed, compounds 8 were not obtained when oxalyl chloride was replaced by TFAA.
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36
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0343219780
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Nozoye, T.; Shibanuma, Y.; Nakai, T.; Hatori, H. Chem. Pharm. Bull. 1988, 36, 4980.
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(1988)
Chem. Pharm. Bull
, vol.36
, pp. 4980
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Nozoye, T.1
Shibanuma, Y.2
Nakai, T.3
Hatori, H.4
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37
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0037062902
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McComas, C. C.; Perales, J. B.; Van Vranken, D. L. Org. Lett. 2002, 3, 2337.
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(2002)
Org. Lett
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McComas, C.C.1
Perales, J.B.2
Van Vranken, D.L.3
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