-
2
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0000010586
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Heterocycles 1988, 27, 323-326.
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Iwata, C.1
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Fujimoto, M.4
Sakae, M.5
Katsurada, M.6
Imanishi, T.7
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3
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0023850896
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Iwata, C.1
Watanabe, M.2
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Fujimoto, M.4
Sakae, M.5
Katsurada, M.6
Imanishi, T.7
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4
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0006067396
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Iwata, C.1
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Nishihara, C.4
Sakae, M.5
Katsurada, M.6
Watanabe, M.7
Kawakami, T.8
Imanishi, T.9
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5
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0342624430
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Iwata, C.1
Fujimoto, M.2
Watanabe, M.3
Kawakami, T.4
Maeda, N.5
Imanishi, T.6
Tanaka, T.7
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6
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0026757324
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Iwata, C.1
Fujimoto, M.2
Watanabe, M.3
Kawakami, T.4
Nakamoto, Y.5
Sakae, M.6
Katsurada, M.7
Imanishi, T.8
Tanaka, T.9
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7
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0028024195
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Tanaka, T.1
Watanabe, M.2
Nakamoto, Y.3
Okuno, K.4
Maekawa, K.5
Iwata, C.6
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8
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0343058716
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Tanaka, T.1
Nakamoto, Y.2
Maekawa, K.3
Watanabe, M.4
Nishihara, C.5
Iwata, C.6
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9
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0000573315
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Iwata, C.; Watanabe, M.; Okamoto, S.; Fujimoto, M.; Sakae, M.; Katsurada, M.; Imanishi, T. Synthesis 1988, 261-262; Iwata, C.; Fujimoto, M.; Okamoto, S.; Nishihara, C.; Sakae, M.; Katsurada, M.; Watanabe, M.; Kawakami, T.; Tanaka,T.; Imanishi, T. Heterocycles 1990, 31, 1601-1604; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Maeda, N.; Imanishi, T.; Tanaka, T. Heterocycles 1991, 52, 2471-2478; Iwata, C.; Fujimoto, M.; Watanabe, M.; Kawakami, T.; Nakamoto, Y.; Sakae, M.; Katsurada, M.; Imanishi, T.; Tanaka, T. J. Chem. Soc., Chem. Commun. 1992, 1379-1381; Tanaka, T.; Watanabe, M.; Nakamoto, Y.; Okuno, K.; Maekawa, K.; Iwata, C. J. Chem. Soc., Chem. Commun. 1994, 2301-2302; Tanaka, T.; Nakamoto, Y.; Maekawa, K.; Watanabe, M.; Nishihara, C; Iwata, C. Heterocycles 1996, 42, 265-272; Tanaka, T.; Takase, W.; Xie, F.; Azuma, T.; Uchida, S.; Ishida, T.; In, Y.; Iwata, C. Synlett 1997, 316-318.
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Synlett
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Tanaka, T.1
Takase, W.2
Xie, F.3
Azuma, T.4
Uchida, S.5
Ishida, T.6
In, Y.7
Iwata, C.8
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0001579798
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b) Kumamoto, T.; Kobayashi, S.; Mukaiyama, T. Bull. Chem. Soc. Jpn. 1972, 45, 866-870;
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f) Foray, G.; Peñéñory, A. B.; Rossi, R. A. Tetrahedron Lett. 1997, 38, 2035-2038.
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Foray, G.1
Peñéñory, A.B.2
Rossi, R.A.3
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18
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84941944835
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note
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Physical data of 3: Colorless crystals, mp. 86-87°C (hexane-AcOEt). 1H NMR (CDCl3) δ: 3.40 (2H, t, J = 7.3 Hz), 4.10 (2H, t, J = 7.3 Hz), 7.36-7.50 (5H, Ar-H). 13C NMR (CDCl3) δ: 27.5, 56.8, 116.2, 129.5 (× 3), 129.8 (× 2), 133.6, 178.8. MS m/z:235(M+), 109 (base).
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21
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0003129682
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b) Harpp, D. N.; Ash, D. K.; Back, T. G.; Gleason, J. G.; Orwig, B. A.; Van Horn, W. F.; Snyder, J. P. Tetrahedron Lett. 1970, 3551-3554.
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(1970)
Tetrahedron Lett.
, pp. 3551-3554
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Harpp, D.N.1
Ash, D.K.2
Back, T.G.3
Gleason, J.G.4
Orwig, B.A.5
Van Horn, W.F.6
Snyder, J.P.7
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23
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0010484253
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a) Yura, T.; Iwasawa, N.; Clark, R.; Mukaiyama, T. Chem. Lett. 1986, 1809-1812;
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(1986)
Chem. Lett.
, pp. 1809-1812
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Yura, T.1
Iwasawa, N.2
Clark, R.3
Mukaiyama, T.4
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24
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0026728918
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b) Orena, M.; Porzi, G.; Sandri, S. Tetrahedron Lett. 1992, 33, 3797-3800;
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Tetrahedron Lett.
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Orena, M.1
Porzi, G.2
Sandri, S.3
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28
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0010484695
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Hiroi, K.; Nishida, M.; Nakayama, A.; Nakazawa, K.; Fujii, E.; Sato S. Chem. Lett. 1979, 969-972.
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Chem. Lett.
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Hiroi, K.1
Nishida, M.2
Nakayama, A.3
Nakazawa, K.4
Fujii, E.5
Sato, S.6
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29
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84941944789
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note
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Et3SiH with trifluoroacetic acid gave no desired product. Birch reduction gave 10 around 40% yield.
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30
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84941944905
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note
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Physical data of 4: Colorless crystals, mp. 85-87°C (benzene). [α]D25+55.6 (c = 0.970, CHCl3). 1H NMR (CDCl3) δ: 3.26 (1H, dd, J = 2.4, 11.6 Hz), 3.62 (1H, dd, J = 7.9, 11.6 Hz), 4.66 (1H, d, J = 7.9 Hz), 4.84 (1H, ddd, J = 2.4, 7.9, 7.9 Hz), 7.18-7.39 (15H, m). 15C NMR (CDCl3) δ: 32.1, 52.5, 70.5, 116.0, 127.5, 127.7, 128.2 (× 2), 128.4, 128.7 (× 2), 128.9 (× 2), 129.0 (× 2), 129.1 (× 2), 129.5 (× 2), 135.1, 139.0, 139.2, 178.8. MS m/z: 402 (M++H, base). Crystal data of 4: C23H19N3S2•C6H 6, Mr = 479.66, orthorhombic, space group P2I2I2I, Cell constant a (Å) = 11.496 (3), b (Å) = 26.268 (4), c (Å) = 8.605 (3), α (°) = 90.00, β(°) = 90.00 (1), γ (°) = 90.00, Volume (Å3) = 2598 (1), Z = 4, Dx = 1.226 g cm-3, μ(Cu-Kα)(mm-1) = 2.01, R = 0.040, RW = 0.132.
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31
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84941944803
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note
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The optical purity was determined as follows. The carbonyl group of α-phenylthio-β-keto compound was reduced by NaBH4 to give two diastereomeric alcohols, one of which was converted to MTPA ester and then analyzed by NMR measurement.
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32
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84941944916
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note
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The absolute configuration of the β-keto methyl ester was determined by an X-ray crystallographic analysis of an acetal derived from the keto ester and (R,R)-2,3-butanediol. Crystal data; C18H24O4S, Mr = 336.43, orthorhombic, space group P2I2I2I, Cell constant a (Å) = 12.305 (1), b (Å) = 15.260 (1), c (Å) = 9.655 (1), α (°) = 90.00, β(°) = 90.00 (1), γ (°) = 90.00, Volume (Å) = 1812.9 (2), Z = 4, Dx = 1.233 g cm-3, μ(Cu-Kα)(mm-1) = 1.73, R = 0.035, RW= 0.104.
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