-
1
-
-
1542502091
-
-
For reviews on polycyclic ethers, see:
-
For reviews on polycyclic ethers, see:. Yasumoto T., and Murata M. Chem. Rev. 93 (1993) 1897
-
(1993)
Chem. Rev.
, vol.93
, pp. 1897
-
-
Yasumoto, T.1
Murata, M.2
-
6
-
-
0000563379
-
-
For reviews on synthetic methods and total syntheses, see:
-
For reviews on synthetic methods and total syntheses, see:. Alvarez E., Candenas M.-L., Pérez R., Ravelo J., and Martín J.D. Chem. Rev. 95 (1995) 1953
-
(1995)
Chem. Rev.
, vol.95
, pp. 1953
-
-
Alvarez, E.1
Candenas, M.-L.2
Pérez, R.3
Ravelo, J.4
Martín, J.D.5
-
20
-
-
0037175485
-
-
Suzuki K., Matsukura H., Matsuo G., Koshino H., and Nakata T. Tetrahedron Lett. 43 (2002) 8653
-
(2002)
Tetrahedron Lett.
, vol.43
, pp. 8653
-
-
Suzuki, K.1
Matsukura, H.2
Matsuo, G.3
Koshino, H.4
Nakata, T.5
-
24
-
-
33845963639
-
-
Fuwa H., Ebine M., Bourdelais A.J., Baden D.G., and Sasaki M. J. Am. Chem. Soc. 128 (2006) 16989
-
(2006)
J. Am. Chem. Soc.
, vol.128
, pp. 16989
-
-
Fuwa, H.1
Ebine, M.2
Bourdelais, A.J.3
Baden, D.G.4
Sasaki, M.5
-
26
-
-
0141508988
-
-
Kadota I., Takamura H., Sato K., Ohno A., Matsuda K., Satake M., and Yamamoto Y. J. Am. Chem. Soc. 125 (2003) 11893
-
(2003)
J. Am. Chem. Soc.
, vol.125
, pp. 11893
-
-
Kadota, I.1
Takamura, H.2
Sato, K.3
Ohno, A.4
Matsuda, K.5
Satake, M.6
Yamamoto, Y.7
-
27
-
-
0035817276
-
-
Nagumo Y., Oguri H., Shindo Y., Sasaki S., Oishi T., Hirama M., Tomioka Y., Mizugaki M., and Tsumuraya T. Bioorg. Med. Chem. Lett. 11 (2001) 2037
-
(2001)
Bioorg. Med. Chem. Lett.
, vol.11
, pp. 2037
-
-
Nagumo, Y.1
Oguri, H.2
Shindo, Y.3
Sasaki, S.4
Oishi, T.5
Hirama, M.6
Tomioka, Y.7
Mizugaki, M.8
Tsumuraya, T.9
-
28
-
-
7744246249
-
-
Matsuo G., Kawamura K., Hori N., Matsukura H., and Nakata T. J. Am. Chem. Soc. 126 (2004) 14374
-
(2004)
J. Am. Chem. Soc.
, vol.126
, pp. 14374
-
-
Matsuo, G.1
Kawamura, K.2
Hori, N.3
Matsukura, H.4
Nakata, T.5
-
31
-
-
34548161417
-
-
Jung J.H., Kim Y.W., Kim M.A., Choi S.Y., Chung Y.K., Kim T.-R., Shin S., and Lee E. Org. Lett. 9 (2007) 3225
-
(2007)
Org. Lett.
, vol.9
, pp. 3225
-
-
Jung, J.H.1
Kim, Y.W.2
Kim, M.A.3
Choi, S.Y.4
Chung, Y.K.5
Kim, T.-R.6
Shin, S.7
Lee, E.8
-
32
-
-
36448958873
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-
Kimura, T.; Nakata, T. Abstract of Papers, Part 2, p 1203, 87th Annual Meeting of the Chemical Society of Japan, Osaka, Japan, March 25-28, 2007.
-
-
-
-
33
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-
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-
Kimura, T.; Hagiwara, M.; Nakata, T. Abstract of Papers, Part 4, p 20, 127th Annual Meeting of the Pharmaceutical Society of Japan, Toyama, Japan, March 28-30, 2007.
-
-
-
-
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-
33845282956
-
-
Kosugi H., Kitaoka M., Tagami K., Takahashi A., and Uda H. J. Org. Chem. 52 (1987) 1078
-
(1987)
J. Org. Chem.
, vol.52
, pp. 1078
-
-
Kosugi, H.1
Kitaoka, M.2
Tagami, K.3
Takahashi, A.4
Uda, H.5
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40
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36448996304
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note
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1/2 = 7.0 Hz, 1H). NOEs between C2-H and C6-H in 9b and 12b were observed.
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42
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36448944110
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note
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1H NMR data. 10b: δ 6.53 (dd, J = 15.3, 5.5 Hz, 1H), 6.38 (dd, J = 15.3, 1.2 Hz, 1H), 5.67 (m, 1H), 4.69 (ddd, J = 11.0, 9.8, 4.9 Hz, 1H); 13b: δ 6.49 (dd, J = 15.2, 5.8 Hz, 1H), 6.41 (d, J = 15.2 Hz, 1H), 5.65 (m, 1H), 4.66 (ddd, J = 10.9, 10.9, 4.8 Hz, 1H). Alkaline hydrolysis of the diacetate 10b followed by acetylation afforded a 2:3 mixture of 2,6-syn-2,3-cis-tetrahydropyran 9b and 2,6-anti-2,3-trans-isomer via an intramolecular cyclization, and the same reaction of 13b predominantly afforded 2,6-anti-2,3-trans-tetrahydropyran. These results confirmed the β-configuration of the 3-acetoxy group in 10b and 13b.
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note
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6 They proposed similar transition states through sulfoxide and Sm(III) coordination to those shown here. However, they noted that it is difficult to propose a transition state structure for conversion of 21 to 22; a possible transition state structure xii does not adopt the familiar chair-like conformation. Their result would be well explained by our proposed transition state, i.e., the cyclization of 21 should proceed through the transition state xiii to give 22.{A figure is presented}
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2O, 60 °C, 88% for 16, 79% for 19.
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0025146271
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Synthesis of (+)-enantiomers of 18a and 18b from tri-O-acetyl-d-glucal:
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Synthesis of (+)-enantiomers of 18a and 18b from tri-O-acetyl-d-glucal:. Nicolaou K.C., Hwang C.-K., Marron B.E., DeFrees S.A., Couladouros E.A., Abe Y., Carrol P.J., and Snyder J.P. J. Am. Chem. Soc. 112 (1990) 3040
-
(1990)
J. Am. Chem. Soc.
, vol.112
, pp. 3040
-
-
Nicolaou, K.C.1
Hwang, C.-K.2
Marron, B.E.3
DeFrees, S.A.4
Couladouros, E.A.5
Abe, Y.6
Carrol, P.J.7
Snyder, J.P.8
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47
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0034606975
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Matsuo G., Hinou H., Koshino H., Suenaga T., and Nakata T. Tetrahedron Lett. 41 (2000) 903
-
(2000)
Tetrahedron Lett.
, vol.41
, pp. 903
-
-
Matsuo, G.1
Hinou, H.2
Koshino, H.3
Suenaga, T.4
Nakata, T.5
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