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H.-R. Lee, J.-H. Choi, N. Lee, S.H. Kim, Y.C. Kim, and B.-K. Kaang Anim. Cells Syst. 12 2008 11 14
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65349183203
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M.K. Lee, H.Y. Jeon, K.Y. Lee, S.H. Kim, C.J. Ma, S.H. Sung, H.-S. Lee, M.J. Park, and Y.C. Kim Planta Med. 73 2007 782 786
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Lee, M.K.1
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Lee, H.-S.7
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Kim, Y.C.9
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4
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0029817906
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For examples of compounds with analogous dimeric structures, see: T. Tanaka, A. Nishimura, I. Kouno, G. Nonaka, and T.-J. Young J. Nat. Prod. 59 1996 843 849 and references cited in Ref. 5
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Tanaka, T.1
Nishimura, A.2
Kouno, I.3
Nonaka, G.4
Young, T.-J.5
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5
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77954349364
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For examples, see:
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For examples, see:
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8
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0030985562
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C.-J. Chou, L.-C. Lin, W.-J. Tsai, S.-Y. Hsu, and L.-K. Ho J. Nat. Prod. 60 1997 375 377
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Chou, C.-J.1
Lin, L.-C.2
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Hsu, S.-Y.4
Ho, L.-K.5
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9
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2042427140
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T. Ishikawa, K. Nishigaya, K. Takami, H. Uchikoshi, I.-S. Chen, and I.-L. Tsai J. Nat. Prod. 67 2004 659 663
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Ishikawa, T.1
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33750011223
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B. Rasmussen, A.-J. Nkurunziza, M. Witt, H.A. Oketch-Rabah, J.W. Jaroszewski, and D. Stærk J. Nat. Prod. 69 2006 1300 1304
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45249097818
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X.Y. Chai, Y.L. Song, Z.R. Xu, H.M. Shi, C.C. Bai, D. Bi, J. Wen, F.F. Li, and P.F. Tu J. Nat. Prod. 71 2008 814 819
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15
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77749254947
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H. Yamakoshi, M. Shibuya, M. Tomizawa, Y. Osada, N. Kanoh, and Y. Iwabuchi Org. Lett. 12 2010 980 983
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Yamakoshi, H.1
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17244373479
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T. Takanami, H. Tokoro, D. Kato, S. Nishiyama, and T. Sugai Tetrahedron Lett. 46 2005 3291 3295
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23
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0001099998
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G. Majetich, D. Lowery, V. Khetani, J.-S. Song, K. Hull, and C. Ringold J. Org. Chem. 58 1991 3988 4001
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Majetich, G.1
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Ringold, C.6
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26
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77954349216
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2O gave a complex mixture in the former conditions and a 12% yield of 8c in the latter.For reaction conditions, see:
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2O gave a complex mixture in the former conditions and a 12% yield of 8c in the latter.For reaction conditions, see:
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28
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57349195843
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C. Santi, S. Santoro, B. Battistelli, L. Testaferri, and M. Tiecco Eur. J. Org. Chem. 2008 5387 5390
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Eur. J. Org. Chem.
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Santi, C.1
Santoro, S.2
Battistelli, B.3
Testaferri, L.4
Tiecco, M.5
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30
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77954349515
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2O, and DIBAL/THF at -78 °C afforded epimeric mixtures of 11β and 11α in ratios of 1:1.2 (83% yield), 1:1.7 (94% yield), and 1:1.8 (63% yield), respectively, favoring 11α
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2O, and DIBAL/THF at -78 °C afforded epimeric mixtures of 11β and 11α in ratios of 1:1.2 (83% yield), 1:1.7 (94% yield), and 1:1.8 (63% yield), respectively, favoring 11α.
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33
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77954348502
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The established absolute stereochemistry of 15α means that the Sharpless asymmetric epoxidation of the electron deficient olefin 5 proceeded in accordance with the general enantioface selection rule. For only a few precedents of the asymmetric epoxidation of electron deficient alkenes, see:
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The established absolute stereochemistry of 15α means that the Sharpless asymmetric epoxidation of the electron deficient olefin 5 proceeded in accordance with the general enantioface selection rule. For only a few precedents of the asymmetric epoxidation of electron deficient alkenes, see:
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36
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77954348775
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Several hours after the start of the reaction, the spinning of the magnetic stirring bar stopped, because the viscosity of the reaction mixture increased as the dimerization proceeded. Therefore, the mixture was, actually, left to stand for the rest of the reaction time
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Several hours after the start of the reaction, the spinning of the magnetic stirring bar stopped, because the viscosity of the reaction mixture increased as the dimerization proceeded. Therefore, the mixture was, actually, left to stand for the rest of the reaction time.
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37
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77954348944
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13C NMR spectra previously reported by Iwabuchi and co-workers; see Ref. 7
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13C NMR spectra previously reported by Iwabuchi and co-workers; see Ref. 7.
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38
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77954349276
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3 from 2 equiv to 4 equiv did not improve the chemical yield further
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3 from 2 equiv to 4 equiv did not improve the chemical yield further.
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