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Volumn 67, Issue 21, 2002, Pages 7226-7237

A versatile stereocontrolled approach to chiral tetrahydrofuran and tetrahydropyran derivatives by use of sequential asymmetric Horner-Wadsworth-Emmons and ring-closure reactions

Author keywords

[No Author keywords available]

Indexed keywords

CHIRAL TETRAHYDROFURAN;

EID: 0037131320     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo0259111     Document Type: Article
Times cited : (38)

References (73)
  • 22
    • 0028108558 scopus 로고
    • and references therein
    • For examples using Pd(II), see: (a) Semmelhack, M. F.; Epa, W. R.; Cheung, A. W.-H.; Gu, Y.; Kim, C.; Zhang, N.; Lew, W. J. Am. Chem. Soc. 1994, 116, 7455, and references therein. For recent examples using Re(VII), see: (b) Kennedy, R. M.; Tang, S. Tetrahedron Lett. 1992, 33, 3729. (c) Towne, T. B.; McDonald, F. E. J. Am. Chem. Soc. 1997, 119, 6022. (d) Sinha, S. C.; Sinha, A.; Sinha, S. C.; Keinan, E. J. Am. Chem. Soc. 1997, 119, 12014. (e) Sinha, S. C.; Keinan, E.; Sinha, S. C. J. Am. Chem. Soc. 1998, 120, 9076. (f) Morimoto, Y.; Iwai, T.; Kinoshita, T. J. Am. Chem. Soc. 1999, 121, 6792 and references therein.
    • (1994) J. Am. Chem. Soc. , vol.116 , pp. 7455
    • Semmelhack, M.F.1    Epa, W.R.2    Cheung, A.W.-H.3    Gu, Y.4    Kim, C.5    Zhang, N.6    Lew, W.7
  • 23
    • 0026651519 scopus 로고
    • For examples using Pd(II), see: (a) Semmelhack, M. F.; Epa, W. R.; Cheung, A. W.-H.; Gu, Y.; Kim, C.; Zhang, N.; Lew, W. J. Am. Chem. Soc. 1994, 116, 7455, and references therein. For recent examples using Re(VII), see: (b) Kennedy, R. M.; Tang, S. Tetrahedron Lett. 1992, 33, 3729. (c) Towne, T. B.; McDonald, F. E. J. Am. Chem. Soc. 1997, 119, .6022. (d) Sinha, S. C.; Sinha, A.; Sinha, S. C.; Keinan, E. J. Am. Chem. Soc. 1997, 119, 12014. (e) Sinha, S. C.; Keinan, E.; Sinha, S. C. J. Am. Chem. Soc. 1998, 120, 9076. (f) Morimoto, Y.; Iwai, T.; Kinoshita, T. J. Am. Chem. Soc. 1999, 121, 6792 and references therein.
    • (1992) Tetrahedron Lett. , vol.33 , pp. 3729
    • Kennedy, R.M.1    Tang, S.2
  • 24
    • 0030847206 scopus 로고    scopus 로고
    • For examples using Pd(II), see: (a) Semmelhack, M. F.; Epa, W. R.; Cheung, A. W.-H.; Gu, Y.; Kim, C.; Zhang, N.; Lew, W. J. Am. Chem. Soc. 1994, 116, 7455, and references therein. For recent examples using Re(VII), see: (b) Kennedy, R. M.; Tang, S. Tetrahedron Lett. 1992, 33, 3729. (c) Towne, T. B.; McDonald, F. E. J. Am. Chem. Soc. 1997, 119, 6022. (d) Sinha, S. C.; Sinha, A.; Sinha, S. C.; Keinan, E. J. Am. Chem. Soc. 1997, 119, 12014. (e) Sinha, S. C.; Keinan, E.; Sinha, S. C. J. Am. Chem. Soc. 1998, 120, 9076. (f) Morimoto, Y.; Iwai, T.; Kinoshita, T. J. Am. Chem. Soc. 1999, 121, 6792 and references therein.
    • (1997) J. Am. Chem. Soc. , vol.119 , pp. 6022
    • Towne, T.B.1    McDonald, F.E.2
  • 25
    • 0031437614 scopus 로고    scopus 로고
    • For examples using Pd(II), see: (a) Semmelhack, M. F.; Epa, W. R.; Cheung, A. W.-H.; Gu, Y.; Kim, C.; Zhang, N.; Lew, W. J. Am. Chem. Soc. 1994, 116, 7455, and references therein. For recent examples using Re(VII), see: (b) Kennedy, R. M.; Tang, S. Tetrahedron Lett. 1992, 33, 3729. (c) Towne, T. B.; McDonald, F. E. J. Am. Chem. Soc. 1997, 119, 6022. (d) Sinha, S. C.; Sinha, A.; Sinha, S. C.; Keinan, E. J. Am. Chem. Soc. 1997, 119, 12014. (e) Sinha, S. C.; Keinan, E.; Sinha, S. C. J. Am. Chem. Soc. 1998, 120, 9076. (f) Morimoto, Y.; Iwai, T.; Kinoshita, T. J. Am. Chem. Soc. 1999, 121, 6792 and references therein.
    • (1997) J. Am. Chem. Soc. , vol.119 , pp. 12014
    • Sinha, S.C.1    Sinha, A.2    Sinha, S.C.3    Keinan, E.4
  • 26
    • 0032500348 scopus 로고    scopus 로고
    • For examples using Pd(II), see: (a) Semmelhack, M. F.; Epa, W. R.; Cheung, A. W.-H.; Gu, Y.; Kim, C.; Zhang, N.; Lew, W. J. Am. Chem. Soc. 1994, 116, 7455, and references therein. For recent examples using Re(VII), see: (b) Kennedy, R. M.; Tang, S. Tetrahedron Lett. 1992, 33, 3729. (c) Towne, T. B.; McDonald, F. E. J. Am. Chem. Soc. 1997, 119, 6022. (d) Sinha, S. C.; Sinha, A.; Sinha, S. C.; Keinan, E. J. Am. Chem. Soc. 1997, 119, 12014. (e) Sinha, S. C.; Keinan, E.; Sinha, S. C. J. Am. Chem. Soc. 1998, 120, 9076. (f) Morimoto, Y.; Iwai, T.; Kinoshita, T. J. Am. Chem. Soc. 1999, 121, 6792 and references therein.
    • (1998) J. Am. Chem. Soc. , vol.120 , pp. 9076
    • Sinha, S.C.1    Keinan, E.2    Sinha, S.C.3
  • 27
    • 0033612739 scopus 로고    scopus 로고
    • and references therein
    • For examples using Pd(II), see: (a) Semmelhack, M. F.; Epa, W. R.; Cheung, A. W.-H.; Gu, Y.; Kim, C.; Zhang, N.; Lew, W. J. Am. Chem. Soc. 1994, 116, 7455, and references therein. For recent examples using Re(VII), see: (b) Kennedy, R. M.; Tang, S. Tetrahedron Lett. 1992, 33, 3729. (c) Towne, T. B.; McDonald, F. E. J. Am. Chem. Soc. 1997, 119, 6022. (d) Sinha, S. C.; Sinha, A.; Sinha, S. C.; Keinan, E. J. Am. Chem. Soc. 1997, 119, 12014. (e) Sinha, S. C.; Keinan, E.; Sinha, S. C. J. Am. Chem. Soc. 1998, 120, 9076. (f) Morimoto, Y.; Iwai, T.; Kinoshita, T. J. Am. Chem. Soc. 1999, 121, 6792 and references therein.
    • (1999) J. Am. Chem. Soc. , vol.121 , pp. 6792
    • Morimoto, Y.1    Iwai, T.2    Kinoshita, T.3
  • 28
    • 85034492453 scopus 로고
    • and references therein
    • Kotsuki, H. Synlett 1992, 97 and references therein.
    • (1992) Synlett , pp. 97
    • Kotsuki, H.1
  • 39
    • 0019157677 scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1980) J. Am. Chem. Soc. , vol.102 , pp. 5699
    • Trost, B.M.1    Curran, D.P.2
  • 40
    • 0001499276 scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1981) Tetrahedron Lett. , vol.22 , pp. 4929
    • Trost, B.M.1    Curran, D.P.2
  • 41
    • 0001579832 scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1993) J. Org. Chem. , vol.58 , pp. 3802
    • Kann, N.1    Rein, T.2
  • 42
    • 0027241748 scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1993) Tetrahedron Lett. , vol.34 , pp. 4071
    • Tanaka, K.1    Ohta, Y.2    Fuji, K.3    Taga, T.4
  • 43
    • 0027999596 scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1994) J. Org. Chem. , vol.59 , pp. 5847
    • Mandai, T.1    Kaihara, Y.2    Tsuji, J.3
  • 44
    • 0030735715 scopus 로고    scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1997) Tetrahedron Lett. , vol.38 , pp. 8943
    • Tanaka, K.1    Watanabe, T.2    Ohta, Y.3    Fuji, K.4
  • 45
    • 0032514973 scopus 로고    scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1998) J. Org. Chem. , vol.63 , pp. 8284
    • Tullis, J.S.1    Vares, L.2    Kann, N.3    Norrby, P.-O.4    Rein, T.5
  • 46
    • 4243697799 scopus 로고    scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1999) Phosphorus, Sulfur Silicon , vol.144-148 , pp. 169
    • Rein, T.1    Vares, L.2    Kawasaki, I.3    Pedersen, T.M.4    Norrby, P.-O.5    Brandt, P.6    Tanner, D.7
  • 47
    • 0033520274 scopus 로고    scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (1999) Tetrahedron Lett. , vol.40 , pp. 6599
    • Tanaka, K.1    Watanabe, T.2    Shimamoto, K.-Y.3    Sahakitpichan, P.4    Fuji, K.5
  • 48
    • 0001574002 scopus 로고    scopus 로고
    • Asymmetric HWE reactions with dicarbonyl substrates: (d) Trost, B. M.; Curran, D. P. J. Am. Chem. Soc. 1980, 102, 5699. (e) Trost, B. M.; Curran, D. P. Tetrahedron Lett. 1981, 22, 4929. (f) Kann, N.; Rein, T. J. Org. Chem. 1993, 58, 3802. (g) Tanaka, K.; Ohta, Y.; Fuji, K.; Taga, T. Tetrahedron Lett. 1993, 34, 4071. (h) Mandai, T.; Kaihara, Y.; Tsuji, J. J. Org. Chem. 1994, 59, 5847. (i) Tanaka, K.; Watanabe, T.; Ohta, Y.; Fuji, K. Tetrahedron Lett. 1997, 38, 8943. (j) Tullis, J. S.; Vares, L.; Kann, N.; Norrby, P.-O.; Rein, T. J. Org. Chem. 1998, 63, 8284. (k) Rein, T.; Vares, L.; Kawasaki, I.; Pedersen, T. M.; Norrby, P.-O.; Brandt, P.; Tanner, D. Phosphorus, Sulfur Silicon 1999, 144-148, 169. (l) Tanaka, K.; Watanabe, T.; Shimamoto, K.-Y.; Sahakitpichan, P.; Fuji, K. Tetrahedron Lett. 1999, 40, 6599. (m) Vares, L.; Rein, T. Org. Lett. 2000, 2, 2611.
    • (2000) Org. Lett. , vol.2 , pp. 2611
    • Vares, L.1    Rein, T.2
  • 50
    • 2142845690 scopus 로고    scopus 로고
    • note
    • Part of this work has been reported in earlier communications; see ref 16k,m.
  • 59
    • 2142723208 scopus 로고    scopus 로고
    • note
    • The primary alcohols recovered after the acyl group migration could be converted to mixtures of secondary/primary alcohols again, thereby increasing the overall yield of the desired secondary alcohol.
  • 62
    • 2142830622 scopus 로고    scopus 로고
    • note
    • 4 in combination with i-PrOH/THF resulted in much faster protective group migration during the reduction compared to when MeOH/THF was used as solvent mixture.
  • 63
    • 2142674075 scopus 로고    scopus 로고
    • note
    • The ring-closed product 30 was obtained in diastereomerically pure form, even though the starting material contained 5% of minor diastereomer 45 (see the Experimental Section).
  • 64
    • 0000092670 scopus 로고
    • For a review on epoxide openings, see: Smith, J. K. Synthesis 1984, 629.
    • (1984) Synthesis , pp. 629
    • Smith, J.K.1
  • 66
    • 2142858450 scopus 로고
    • and references therein. For details regarding the NMR analyses of the Mosher esters 41 and 42 see the Supporting Information
    • Ohtani, I.; Kusumi, T.; Kashman, Y.; Kakisawa, H. J. Am. Chem. Soc. 1991, 113, 4092, and references therein. For details regarding the NMR analyses of the Mosher esters 41 and 42, see the Supporting Information.
    • (1991) J. Am. Chem. Soc. , vol.113 , pp. 4092
    • Ohtani, I.1    Kusumi, T.2    Kashman, Y.3    Kakisawa, H.4
  • 67
    • 0003539011 scopus 로고
    • VCH Publishers: New York
    • 13C NMR peaks at 73.8 and 68.5 ppm, respectively, whereas the corresponding carbons in the minor product 35 give peaks at 79.2 and 72.2 ppm, respectively. In 2,6-trans-THP derivatives the carbons at C-2 and C-6 are, on average, shifted upfield by ca. 7 ppm compared to the same carbons in the corresponding 2,6-cis-THP derivative; see: (a) Pihlaja, K.; Kleinpeter, E. Carbon-13 NMR Chemical Shifts in Structural and Stereochemical Analysis; VCH Publishers: New York, 1994; pp 108-114. (b) Eliel, E. L.; Manoharan, M.; Pietrusiewicz, K. M.; Hargrave, K. D. Org. Magn. Reson. 1983, 21, 94.
    • (1994) Carbon-13 NMR Chemical Shifts in Structural and Stereochemical Analysis , pp. 108-114
    • Pihlaja, K.1    Kleinpeter, E.2
  • 68
    • 0003090438 scopus 로고
    • 13C NMR peaks at 73.8 and 68.5 ppm, respectively, whereas the corresponding carbons in the minor product 35 give peaks at 79.2 and 72.2 ppm, respectively. In 2,6-trans-THP derivatives the carbons at C-2 and C-6 are, on average, shifted upfield by ca. 7 ppm compared to the same carbons in the corresponding 2,6-cis-THP derivative; see: (a) Pihlaja, K.; Kleinpeter, E. Carbon-13 NMR Chemical Shifts in Structural and Stereochemical Analysis; VCH Publishers: New York, 1994; pp 108-114. (b) Eliel, E. L.; Manoharan, M.; Pietrusiewicz, K. M.; Hargrave, K. D. Org. Magn. Reson. 1983, 21, 94.
    • (1983) Org. Magn. Reson. , vol.21 , pp. 94
    • Eliel, E.L.1    Manoharan, M.2    Pietrusiewicz, K.M.3    Hargrave, K.D.4
  • 69
    • 2142794337 scopus 로고    scopus 로고
    • note
    • The cis and trans isomers could be separated by careful flash chromatography (2-8% EtOAc in hexanes).
  • 70
    • 2142672824 scopus 로고    scopus 로고
    • note
    • 1H NMR.
  • 71
    • 2142681598 scopus 로고    scopus 로고
    • note
    • Compound 44 originates from 16b, the minor diastereomer formed in the reaction between 13b and 14a.
  • 72
    • 2142730876 scopus 로고    scopus 로고
    • note
    • Compound 45 originates from the minor (E)-diastereomer formed in the asymmetric HWE reaction with 27a.
  • 73
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    • note
    • We cannot exclude the possibility that the product contains trace amounts of the 2,6-trans-THP product resulting from ring closure of compound 44; we have only been able to detect product isomers 34 and 35, however.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.