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6
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1842555113
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H. Moriyama, T. Tsukida, Y Inoue, K. Yokota, K. Yoshino, H. Kondo, N. Miura, and S. Nishimura J. Med. Chem. 47 2004 1930 1938
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Miura, N.7
Nishimura, S.8
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0036331047
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M. Lemaire, N. Veny, T. Gefflaut, E. Gallienne, R. Chênevert, and J. Bolte Synlett 2002 1359 1361
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Lemaire, M.1
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Bolte, J.6
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11
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0001053043
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T. Shono, Y. Matsumura, T. Tsubata, Y. Sugihara, S.-I. Yamane, T. Kanazawa, and T. Aoki J. Am. Chem. Soc. 104 1982 6697 6703
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Shono, T.1
Matsumura, Y.2
Tsubata, T.3
Sugihara, Y.4
Yamane, S.-I.5
Kanazawa, T.6
Aoki, T.7
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13
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0001039632
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T. Shono, Y. Matsumura, O. Onomura, M. Ogaki, and T. Kanazawa J. Org. Chem. 52 1987 536 541
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(1987)
J. Org. Chem.
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Shono, T.1
Matsumura, Y.2
Onomura, O.3
Ogaki, M.4
Kanazawa, T.5
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15
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0038539446
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Y. Matsumura, O. Onomura, H. Suzuki, S. Furukubo, T. Maki, and C.-J. Li Tetrahedron Lett. 44 2003 5519 5522
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Matsumura, Y.1
Onomura, O.2
Suzuki, H.3
Furukubo, S.4
Maki, T.5
Li, C.-J.6
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16
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0005977631
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T. Shono, Y. Matsumura, O. Onomura, T. Kanazawa, and M. Habuka Chem. Lett. 1984 1101 1104
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(1984)
Chem. Lett.
, pp. 1101-1104
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Shono, T.1
Matsumura, Y.2
Onomura, O.3
Kanazawa, T.4
Habuka, M.5
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20
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4744361464
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note
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3) δ 1.34-1.55 (m, 2H), 1.58-1.74 (m, 4H), 2.04 (s, 3H), 2.88 (t, J = 12.9 Hz, 1H), 3.69 (s, 3H), 4.00-4.10 (m, 1H), 4.15 (dd, J = 11.4 and 6.6 Hz, 1H), 4.24 (dd, J = 11.4 and 8.7 Hz, 1H), 4.51 (br s, 1H)
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23
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4744357819
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note
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4 and the solvent was removed in vacuo, the residue was subjected on chromatography (silica gel) (AcOEt:n-hexane = 1:3) to afford 1,2,3-triacetoxy-5S-acetoxymethyl-N-methoxycarbonyl piperidine (5) in 85% yield
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24
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4744360880
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note
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Determined by HPLC method; YMC-Pack SIL (0.46 cm∅ × 15 cm), n-hexane/ethanol = 10/1, wavelength: 210 nm, flow rate: 0.5 mL/min, retention time of major isomer: 11.4 min
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25
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4744349295
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note
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3)
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26
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4744363896
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2S,3S and 21 were mounted on a glass fiber. All measurements were made on a Quantum CCD area detector coupled with a Rigaku AFC7 diffractometer using graphite-monochromated Mo Kα radiation (λ = 0.71069 Å) at 296-297 K. Data were collected in 0.50° oscillations with 30.0 s exposures. A sweep of data was done using φ oscillations from 0.0° to 190.0° at χ = 0° and a second sweep was performed using w oscillations between -19.0° and 23.0° at χ = 90.0°. The crystal-to-detector distance was 40.7 mm, and the detector swing angle was -5.0°. The data were corrected for Lorentz and polarization effects. The structures were solved by direct methods (SIR92) and refined by full matrix least squares methods. All calculations were performed using TEXSAN. CCDC 246337 & 246338 contains the supplementary crystallographic data for this paper. The data can be obtained free of charge via www.ccdc.cam.ac.uk/data_request/cif, by e-mailing data_request@ccdc.cam.ac. uk, or by contacting The Cambridge Crystallographic Data Centre, 12, Union Road, Cambridge CB2 1EZ, UK; fax: +44(0)-1223-336033
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28
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0030570858
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Y. Matsumura, Y. Yoshimoto, C. Horikawa, T. Maki, and M. Watanabe Tetrahedron Lett. 37 1996 5715 5718
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(1996)
Tetrahedron Lett.
, vol.37
, pp. 5715-5718
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Matsumura, Y.1
Yoshimoto, Y.2
Horikawa, C.3
Maki, T.4
Watanabe, M.5
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29
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4744358418
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note
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3)
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30
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4744340331
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note
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The stereoselectivity can be also explainable in terms of a participating effect of 3-acetoxyl group or thermodynamic control of the products
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31
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4744344012
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note
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A mechanism involving an initial attack of acetic acid on C-2 of a cation (C-2) radical (C-1) intermediate cannot be denied
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