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Volumn 44, Issue 35, 2003, Pages 6717-6720

Vicinal dianions of diethyl α-aroylsuccinates: A general synthetic route to α-aroyl- and α-arylidene-γ-butyrolactones

Author keywords

Dianions; Diethyl aroylsuccinates; aroyl butyrolactones; arylidene butyrolactones

Indexed keywords

ANION; CARBONYL DERIVATIVE; LACTONE DERIVATIVE; METHANE; METHANESULFONYL CHLORIDE; PYRIDINE; SUCCINIC ACID DERIVATIVE; UNCLASSIFIED DRUG;

EID: 0043172234     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(03)01622-8     Document Type: Article
Times cited : (15)

References (28)
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    • Thompson, C.M.1
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    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2002) Synth. Commun. , vol.32 , pp. 2601-2604
    • Reddy, G.S.1    Neelakantan, P.2    Iyengar, D.S.3
  • 9
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    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2002) Helv. Chim. Acta , vol.85 , pp. 3525-2530
    • Mali, R.S.1    Babu, K.N.2
  • 10
    • 0037185604 scopus 로고    scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2002) Tetrahedron Lett. , vol.43 , pp. 753-755
    • Consorti, C.1    Ebeling, G.2    Dupont, J.3
  • 11
    • 0034620011 scopus 로고    scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2000) Chem. Commun. , pp. 2381-2382
    • Grigg, R.1    Savic, V.2
  • 12
    • 0034234958 scopus 로고    scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2000) Heterocycles , vol.53 , pp. 1569-1572
    • Jiaang, W.-T.1    Wang, C.-L.2    Tseng, A.3    Chen, S.-T.4
  • 13
    • 0030755274 scopus 로고    scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (1997) Synthesis , pp. 1061-1066
    • Rossi, R.1    Bellina, F.2    Bechini, C.3    Mannina, L.4
  • 14
    • 0042814181 scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (1991) Heterocycles , vol.32 , pp. 1279-1282
    • Ishibashi, H.1    Ito, K.2    Tabuchi, M.3    Ikeda, M.4
  • 15
    • 0025823022 scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (1991) J. Chem. Soc., Chem. Commun. , pp. 1314-1315
    • Lee, E.1    Hur, C.-U.2    Jeong, Y.-C.3    Rhee, Y.-H.4    Chang, M.-H.5
  • 16
    • 84970624452 scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (1988) Aust. J. Chem. , vol.41 , pp. 251-261
    • Jackson, W.R.1    Perlmutter, P.2    Smallridge, A.J.3
  • 17
    • 0001492054 scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (1986) Tetrahedron Lett. , vol.27 , pp. 641-644
    • Bachi, M.D.1    Bosch, E.2
  • 18
    • 0042313075 scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (1978) Chem. Lett. , pp. 653-656
    • Tanaka, K.1    Unema, H.2    Yamgishi, N.3    Ono, N.4    Kaji, A.5
  • 19
    • 85087228410 scopus 로고    scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2001) Synthesis , pp. 403-408
    • Janecki, T.1    Blaszezyk, E.2
  • 20
    • 0342264627 scopus 로고    scopus 로고
    • For some recent syntheses, see: (a) Reddy, G. S.; Neelakantan, P.; Iyengar, D. S.; Synth. Commun. 2002, 32, 2601-2604; (b) Mali, R. S.; Babu, K. N. Helv. Chim. Acta 2002, 85, 3525-2530; (c) Consorti, C.; Ebeling, G.; Dupont, J. Tetrahedron Lett. 2002, 43, 753-755; (d) Grigg, R.; Savic, V. Chem. Commun. 2000, 2381-2382; (e) Jiaang, W.-T.; Wang, C.-L.; Tseng, A.; Chen, S.-T. Heterocycles 2000, 53, 1569-1572; (f) Rossi, R.; Bellina, F.; Bechini, C.; Mannina, L. Synthesis 1997, 1061-1066; (g) Ishibashi, H.; Ito, K.; Tabuchi, M.; Ikeda, M. Heterocycles 1991, 32, 1279-1282; (f) Lee, E.; Hur, C.-U.; Jeong, Y.-C.; Rhee, Y.-H.; Chang, M.-H. J. Chem. Soc., Chem. Commun. 1991, 1314-1315; (g) Jackson, W. R.; Perlmutter, P.; Smallridge, A. J. Aust. J. Chem. 1988, 41, 251-261; (h) Bachi, M. D.; Bosch, E. Tetrahedron Lett. 1986, 27, 641-644; (i) Tanaka, K.; Unema, H.; Yamgishi, N.; Ono, N.; Kaji, A. Chem. Lett. 1978, 653-656; (j) Janecki, T.; Blaszezyk, E. Synthesis 2001, 403-408; (k) Castulik, J.; Mazal, C. Tetrahedron Lett. 2001, 41, 2741-2744.
    • (2001) Tetrahedron Lett. , vol.41 , pp. 2741-2744
    • Castulik, J.1    Mazal, C.2
  • 21
    • 85031138667 scopus 로고    scopus 로고
    • note
    • 10.
  • 22
    • 85031142460 scopus 로고    scopus 로고
    • Irradiation of H-4 resulted in 7.9% enhancement of H-5, but there was no effect on H-3. The enhancement of 8.5% of H-4 was observed, when H-5 was irradiated, but there was no enhancement of H-3.
    • Irradiation of H-4 resulted in 7.9% enhancement of H-5, but there was no effect on H-3. The enhancement of 8.5% of H-4 was observed, when H-5 was irradiated, but there was no enhancement of H-3.
  • 23
    • 0033779083 scopus 로고    scopus 로고
    • note
    • The chemical shifts of the benzylidene protons of compounds 5 appeared as doublets (J=1.5-1.8 Hz) at δ 7.6-7.75 ppm, comparable to the chemical shifts of the E-isomers of some related compounds reported in the literature, see for examples: (a) Hwang, E.-I.; Yun, B.-S.; Kim, Y.-K.; Kwon, B.-M.; Kim, H.-G.; Lee, H.-B.; Jeong, W.-J.; Kim, S.-U. J. Antibiot. 2000, 53, 903-911; (b) Banerji, J.; Das, B.; Chatterjee, A.; Shoolery, J. N. Phytochemistry 1984, 23, 2323-2327; (c) Stevens, D. R.; Whiting, D. A. J. Chem. Soc., Perkin Trans. 1 1992, 633-637.
  • 24
    • 85031142445 scopus 로고    scopus 로고
    • 5h were observed upon irradiation of H-5 and H-4, respectively.
    • Enhancements of 9.8 and 12.2% of H-4 and H-5 of 5h were observed upon irradiation of H-5 and H-4, respectively.
  • 25
    • 0001537080 scopus 로고
    • and references cited therein
    • Albright J.D. Tetrahedron. 39:1983;3207-3233. and references cited therein.
    • (1983) Tetrahedron , vol.39 , pp. 3207-3233
    • Albright, J.D.1


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