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Volumn , Issue 4, 2008, Pages 525-528

Highly efficient domino reaction for the synthesis of the erythrina and B-homoerythrina alkaloid skeleton

Author keywords

Domino reactions; Erythrina alkaloids; Indolizidine; Lactams; Lewis acids; Spiro compounds

Indexed keywords

BETA HOMOERYTHRINA ALKALOID; ERYTHRINA ALKALOID; LEWIS ACID; SPIRO COMPOUND; UNCLASSIFIED DRUG;

EID: 41049105631     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1032091     Document Type: Article
Times cited : (11)

References (23)
  • 2
    • 0001847186 scopus 로고    scopus 로고
    • Shibasaki, M, Stoddart, J. F, Vögtle, F, Eds, Wiley-VCH: Weinheim
    • (b) Tietze, L. F.; Haunert, F. In Stimulating Concepts in Chemistry; Shibasaki, M.; Stoddart, J. F.; Vögtle, F., Eds.; Wiley-VCH: Weinheim, 2000, 39.
    • (2000) Stimulating Concepts in Chemistry , pp. 39
    • Tietze, L.F.1    Haunert, F.2
  • 12
    • 77957054567 scopus 로고
    • Manske, R. H. F, Ed, Academic Press: New York
    • (a) Boekelheide, V. In The Alkaloids, Vol. 7; Manske, R. H. F., Ed.; Academic Press: New York, 1960, 201.
    • (1960) The Alkaloids , vol.7 , pp. 201
    • Boekelheide, V.1
  • 13
    • 77957094911 scopus 로고
    • Manske, R. H. F, Ed, Academic Press: New York
    • (b) Hill, R. K. In The Alkaloids, Vol. 9; Manske, R. H. F., Ed.; Academic Press: New York, 1967, 483.
    • (1967) The Alkaloids , vol.9 , pp. 483
    • Hill, R.K.1
  • 14
    • 0002696070 scopus 로고
    • Rodrigo, R. G. A, Ed, Academic Press: New York
    • (c) Dyke, S. F.; Quessy, S. N. In The Alkaloids, Vol. 18; Rodrigo, R. G. A., Ed.; Academic Press: New York, 1981, 1.
    • (1981) The Alkaloids , vol.18 , pp. 1
    • Dyke, S.F.1    Quessy, S.N.2
  • 15
    • 0003775927 scopus 로고
    • Phillipson, J. D, Margaret, M. F, Zenk, M. H, Eds, Springer: Berlin
    • (d) Jackson, A. H. In Chemistry and Biology of Isoquinoline Alkaloids; Phillipson, J. D.; Margaret, M. F.; Zenk, M. H., Eds.; Springer: Berlin, 1985, 62.
    • (1985) Chemistry and Biology of Isoquinoline Alkaloids , pp. 62
    • Jackson, A.H.1
  • 22
    • 41049112115 scopus 로고    scopus 로고
    • General Procedure To a stirred solution of amine 2 (1.00 equiv) in MeCN (0.5 mL/mmol) was added dropwise at 0°C AlMe3 (2.00 M in toluene, 2.00 equiv, then In(OTf)3 (4-25 mol, and the ester 3 (1.00 equiv, and stirring was continued for 3-17 h at r.t. or the mixture was heated to 100-180°C under microwave irradiation. The reaction mixture was cooled to 0°C, TfOH (3.5 equiv) was added dropwise and stirring was continued for 5 h at r.t. Subsequently, the mixture was quenched by addition of sat. aq NaHCO3 at 0°C with stirring for 20 min. The mixture was extracted with EtOAc, the combined organic layers were washed with brine, dried over Na2SO4, and the solvent was removed under reduced pressure. The crude product was subjected to column chromatography to yield 38-99% of the spirocycle 4. Compound 4a: 1H NMR (300 MHz, DMSO, δ, 1.35-1.60 m, 5 H, 3-H2, 2-H2
    • a, 8a-H), 2.39-2.48


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.