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1
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85030202190
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note
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1. This work was carried out at Hokkaido University.
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2
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0019258699
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2. (a) Omura, S.; Nakagawa, A.; Hashimoto, H.; Oiwa, R.; Iwai, Y.; Hirano, A.; Shibukawa, N.; Kojima, Y. J. Antibiotics 1980, 33, 1395-1396.
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Hirano, A.6
Shibukawa, N.7
Kojima, Y.8
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3
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0019832338
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(b) Nakagawa, A.; Iwai, Y.; Hashimoto, H.; Miyazaki, N.; Oiwa, R.; Takahashi, Y.; Hirano, A.; Shibukawa, N.; Kojima, Y.; Omura, S. ibid. 1981, 34, 1408-1415.
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Omura, S.10
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4
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0030048051
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3. For biological activities and structures of benzastatins closely related to 1, see: (a) Kim, W.-G.; Kim, J.-P.; Kim, C.-J.; Lee, K.-H.; Yoo, I.-D. J. Antibiotics 1996, 49, 20-25.
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Kim, W.-G.1
Kim, J.-P.2
Kim, C.-J.3
Lee, K.-H.4
Yoo, I.-D.5
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5
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0030053567
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(b) Kim, W.-G.; Kim, J.-P.; Yoo, I.-D. ibid. 1996, 49, 26-30.
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Kim, W.-G.1
Kim, J.-P.2
Yoo, I.-D.3
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8
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0000345657
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6. When we began the studies on asymmetric synthesis of virantmycin, its relative and absolute stereochemistry was unknown. For our preliminary communication, see: Morimoto, Y.; Oda, K.; Shirahama, H.; Matsumoto, T.; Omura, S. Chem. Lett. 1988, 909-912.
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Morimoto, Y.1
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Matsumoto, T.4
Omura, S.5
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10
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85082943077
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8. For a review on wide applications of the Sharpless epoxidation to organic syntheses, see: Pfenninger, A. Synthesis 1986, 89-116.
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Pfenninger, A.1
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12
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0000560517
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10. For activation of 6-endo over 5-exo hydroxy epoxide openings, see: (a) Nicolaou, K. C.; Prasad, C. V. C.; Somers, P. K.; Hwang, C.-K. J. Am. Chem. Soc. 1989, 111, 5330-5334. For activation of 7-endo over 6-exo epoxide openings, see:
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Nicolaou, K.C.1
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33845185491
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19
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85030205159
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note
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15. Concerning chemical shifts of the vinyl protons in trisubstituted α, β-unsaturated esters, (E)-isomers appear generally in much lower field than its (Z)-isomers. See ref. 5.
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21
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0016386657
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85030200085
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3b
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31
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0014668302
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36
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85030203837
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note
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28. The optical rotation of natural (-)-1 was reexamined and this value was obtained.
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37
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0023707447
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29. Ichimura, M.; Muroi, K.; Asano, K.; Kawamoto, I.; Tomita, F.; Morimoto, M.; Nakano, H. J. Antibiotics 1988, 41, 1285-1288.
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39
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