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Volumn 55, Issue 11, 1997, Pages 946-957

Total synthesis of antitumor antibiotic FR900482

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EID: 0007052317     PISSN: 00379980     EISSN: None     Source Type: Journal    
DOI: 10.5059/yukigoseikyokaishi.55.946     Document Type: Article
Times cited : (10)

References (66)
  • 47
    • 0016250848 scopus 로고
    • c) Ninomiya, K., Shioiri, T., Yamada, S., idem, Chem. Pharm. Bull., 1974, 22, 1398-1404.
    • (1974) Chem. Pharm. Bull. , vol.22 , pp. 1398-1404
  • 55
    • 85033511295 scopus 로고    scopus 로고
    • note
    • After purification by column chromatography on silica gel, the aliphatic segment 15 was immediately used for the next coupling reaction due to its instability.
  • 56
    • 0028907315 scopus 로고
    • When the corresponding mesylate and iodide were used as substrates for the subsequent coupling reaction with the aromatic segment 14, none of the desired product was obtained and the unreacted starting material was always recovered unchanged. To our delight, the triflate 15 was found to serve as an excellent electophile for the objective coupling reaction. For recent examples for the usefulness of some trifrate derivatives as good electrophiles, see, a) Fairbanks, A. J.; Fleet, G. W. J. Tetrahedron, 1995, 51, 3881.
    • (1995) Tetrahedron , vol.51 , pp. 3881
    • Fairbanks, A.J.1    Fleet, G.W.J.2
  • 61
    • 85033506949 scopus 로고    scopus 로고
    • note
    • 1H-NMR spectra of 12 and i rigorously established identity of their stereostructures. Details of X-ray crystallographic study will be reported in a separate paper. (Chemical Equation Presented)
  • 62
    • 0024784234 scopus 로고
    • A related base-catalyzed epimerization has been reported for the synthesis of 9-epi-mitomycin B, see, Kasai, M.; Kono, M.; Shirahata, K. J. Org. Chem. 1989, 54, 5908.
    • (1989) J. Org. Chem. , vol.54 , pp. 5908
    • Kasai, M.1    Kono, M.2    Shirahata, K.3
  • 63
    • 85033508374 scopus 로고    scopus 로고
    • note
    • 9a-H in 10, 46, 47, and 48 were found to be 3.1%, 3.2%, 3.3%, and 2.9%, respectively. Based on these results, their stereostructures could be rigorously assigned as depicted. A related assignment of the C-9 stereochemistries has been reported for the structure determination of FR900482(1) (ref. 4).
  • 64
    • 85033516545 scopus 로고    scopus 로고
    • note
    • 3·Py), tetra-n-propylammonium perruthenate (TPAP), 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ), etc.] gave complicated mixtures of the products probably due to chemical instability of the naked aziridine functionality in 50 and/or 51 under these conditions.
  • 66
    • 0029145259 scopus 로고
    • Studies on alkylation and cross-linking reaction of DNA by natural mitomycin C (3) and unnatural ent-mitomycin C (ent-3) have been reported, see, Gargiulo, D.; Musser, S. S.; Yang, L.; Fukuyama, T.; Tomasz, M. J. Am. Chem. Soc. 1995, 117, 9388.
    • (1995) J. Am. Chem. Soc. , vol.117 , pp. 9388
    • Gargiulo, D.1    Musser, S.S.2    Yang, L.3    Fukuyama, T.4    Tomasz, M.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.