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Volumn 72, Issue 22, 2007, Pages 8489-8495

Total synthesis of streptonigrone

Author keywords

[No Author keywords available]

Indexed keywords

FUNCTIONALIZATION; PYRIDONES; STREPTONIGRONE;

EID: 35548941454     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo701435p     Document Type: Article
Times cited : (56)

References (69)
  • 3
    • 0026510596 scopus 로고    scopus 로고
    • Preparation by oxidative decarboxylation of streptonigrin: (c) Preobrazhenskaya, M. N.; Holpne-Kozlova, N. V.; Lazhko, E. I. J. Antibiot. 1991, 45, 227.
    • Preparation by oxidative decarboxylation of streptonigrin: (c) Preobrazhenskaya, M. N.; Holpne-Kozlova, N. V.; Lazhko, E. I. J. Antibiot. 1991, 45, 227.
  • 4
    • 0026755650 scopus 로고    scopus 로고
    • Imino derivative and bioactivity thereof: (d) Tolstikov, V. V.; Preobrazhenskaya, M. N.; Balzarini, J.; De Clercq, E. J. Antibiot. 1992, 45, 1002.
    • Imino derivative and bioactivity thereof: (d) Tolstikov, V. V.; Preobrazhenskaya, M. N.; Balzarini, J.; De Clercq, E. J. Antibiot. 1992, 45, 1002.
  • 7
    • 0030869202 scopus 로고    scopus 로고
    • Structural work: (c) Tennant, S.; Rickards, R. W. Tetrahedron 1997, 53, 15101.
    • Structural work: (c) Tennant, S.; Rickards, R. W. Tetrahedron 1997, 53, 15101.
  • 13
    • 85012727336 scopus 로고    scopus 로고
    • Streptonigrin: (a) Weinreb, S. M. Strategies Tactics Org. Synth. 1984, 1, 325.
    • Streptonigrin: (a) Weinreb, S. M. Strategies Tactics Org. Synth. 1984, 1, 325.
  • 16
    • 0019445632 scopus 로고    scopus 로고
    • Streptonigrin: (a) Kende, A. S.; Lorah, D. P.; Boatman, R. J. J. Am. Chem. Soc. 1981, 103, 1271.
    • Streptonigrin: (a) Kende, A. S.; Lorah, D. P.; Boatman, R. J. J. Am. Chem. Soc. 1981, 103, 1271.
  • 18
    • 0021338389 scopus 로고    scopus 로고
    • Lavendamycin: (c) Kende, A. S.; Ebetino, F. H. Tetrahedron Lett. 1984, 25, 923.
    • Lavendamycin: (c) Kende, A. S.; Ebetino, F. H. Tetrahedron Lett. 1984, 25, 923.
  • 19
    • 33845376451 scopus 로고
    • Reviews: a
    • Reviews: (a) Boger, D. L. Chem. Rev. 1986, 86, 781.
    • (1986) Chem. Rev , vol.86 , pp. 781
    • Boger, D.L.1
  • 20
    • 85021598095 scopus 로고    scopus 로고
    • Boger, D. L. Strategies Tactics Org. Synth. 1988, 2, 1.
    • (b) Boger, D. L. Strategies Tactics Org. Synth. 1988, 2, 1.
  • 21
    • 0022398192 scopus 로고    scopus 로고
    • Streptonigrin: (c) Boger, D. L.; Panek, J. S. J. Am. Chem. Soc. 1985, 107, 5745.
    • Streptonigrin: (c) Boger, D. L.; Panek, J. S. J. Am. Chem. Soc. 1985, 107, 5745.
  • 23
    • 0000112605 scopus 로고    scopus 로고
    • Lavendamycin: (e) Boger, D. L.; Duff, S. R.; Panek, J. S.; Yasuda, M. J. Org. Chem. 1985, 50, 5790.
    • Lavendamycin: (e) Boger, D. L.; Duff, S. R.; Panek, J. S.; Yasuda, M. J. Org. Chem. 1985, 50, 5790.
  • 24
    • 0000302152 scopus 로고    scopus 로고
    • Medicinal, chemistry studies: Boger, D. L.; Yasuda, M.; Mitscher, L. A.; Drake, S. D.; Kitos, P. A.; Thompson, S. C. J. Med. Chem. 1987, 30, 1918.
    • (f) Medicinal, chemistry studies: Boger, D. L.; Yasuda, M.; Mitscher, L. A.; Drake, S. D.; Kitos, P. A.; Thompson, S. C. J. Med. Chem. 1987, 30, 1918.
  • 52
    • 35549005912 scopus 로고    scopus 로고
    • In the presence of Et3N, a minor degree of overreduction of 12 to 17 occurs only after an extended (> 12 h) contact time
    • 3N, a minor degree of overreduction of 12 to 17 occurs only after an extended (> 12 h) contact time.
  • 53
    • 35548953141 scopus 로고    scopus 로고
    • Experimental procedures and characterization data for compounds not directly related to 1 are provided as Supporting Information.
    • Experimental procedures and characterization data for compounds not directly related to 1 are provided as Supporting Information.
  • 54
    • 35548966670 scopus 로고    scopus 로고
    • 2.
    • 2.
  • 55
    • 35549004057 scopus 로고    scopus 로고
    • 13C lines at ca. 104, 118, and 142 ppm. Hardcopy spectra are provided as Supporting Information.
    • 13C lines at ca. 104, 118, and 142 ppm. Hardcopy spectra are provided as Supporting Information.
  • 56
    • 35549006339 scopus 로고    scopus 로고
    • Substituent Z was H in chalcones 25 related to camptothecin. Such enones cyclized to indolizines only upon exposure to Lewis acidic agents, in contrast to the more electrophilic, doubly activated enones (Z = COOEt, etc.), which cyclize spontaneously.
    • Substituent Z was H in chalcones 25 related to camptothecin. Such enones cyclized to indolizines only upon exposure to Lewis acidic agents, in contrast to the more electrophilic, "doubly activated" enones (Z = COOEt, etc.), which cyclize spontaneously.
  • 57
    • 35548949832 scopus 로고    scopus 로고
    • Calculations carried out with the Hyperchem package
    • Calculations carried out with the Hyperchem package.
  • 60
    • 35548935640 scopus 로고    scopus 로고
    • 2.
    • 2.
  • 63
    • 35548999682 scopus 로고    scopus 로고
    • Condensation of 12 and related substances with protected glycine esters, as well as reduction of nitroketones such as 20 (H2, Pd-C, MeOH, or EtOAc, RT, 1 h; H2, Pd-C, HCl, MeOH-H2O, RT, 5 h; H2, Ra.Ni, MeOH, RT, 1-4 h; Zn, AcOH, RT, 30 min; SnCl 2, HCl, H2O, EtOH, 60°C, 1 h; SnCl2, EtOAc, 60°C, 1 h) afforded largely intractable mixtures of products. Only reduction with SnCl2 followed by treatment with ethyl chloroformate afforded some of the desired material. Customary methods for the conversion of 40 and related compounds to the corresponding bromoketones Br 2, CHCl3, RT, 4 h; Br2, AcOH, RT, 15 min; Br2, AcOH, dioxane, RT, 1-18 h; pyridinium tribromide, AcOH, RT, 1.5 h; CuBr2, CHCl3, RT, 18 h; NBS, NH4OAc, CCl4, 80°C, 4-24 h, were inefficient, and the reaction of the bromoketon
    • 3 or with MsNHNa proceeded poorly.
  • 68
    • 35548974324 scopus 로고    scopus 로고
    • 13C NMR chemical shifts for synthetic and natural 1 is provided as Supporting Information.
    • 13C NMR chemical shifts for synthetic and natural 1 is provided as Supporting Information.
  • 69
    • 35548961393 scopus 로고    scopus 로고
    • Experimental protocols are provided as Supporting Information
    • Experimental protocols are provided as Supporting Information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.