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Volumn 55, Issue 14, 1999, Pages 4325-4340

New synthetic route of guanidine from trichloroacetamide for tetrodotoxin and its related compounds

Author keywords

Guanidine; Hydrogenolysis; Protecting group; Toxins

Indexed keywords

ACETAMIDE DERIVATIVE; GUANIDINE; TETRODOTOXIN;

EID: 0033119493     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4020(99)00140-4     Document Type: Article
Times cited : (32)

References (54)
  • 3
    • 0001283386 scopus 로고
    • Patai. S.; Rappoport, Z., Eds.; John Wiley & Sons: New York, Chapter 10
    • For a review: Yamamoto, Y.; Kojima, S. In The Chemistry of Amidines and Imidates; Patai. S.; Rappoport, Z., Eds.; John Wiley & Sons: New York, 1991; Vol. 2; Chapter 10, p 486-526.
    • (1991) The Chemistry of Amidines and Imidates , vol.2 , pp. 486-526
    • Yamamoto, Y.1    Kojima, S.2
  • 21
    • 0000735249 scopus 로고    scopus 로고
    • Quite recently, bisprotected guanidine triflate was reported as efficient guanidinylation reagent
    • Quite recently, bisprotected guanidine triflate was reported as efficient guanidinylation reagent.: Feichtinger, K.; Zapf, C.; Sings, H. L.; Goodman, M. J. Org. Chem. 1998, 63, 3804-3805.
    • (1998) J. Org. Chem. , vol.63 , pp. 3804-3805
    • Feichtinger, K.1    Zapf, C.2    Sings, H.L.3    Goodman, M.4
  • 33
    • 84920310459 scopus 로고    scopus 로고
    • note
    • 10a on the synthesis of a simple model compound of tetrodotoxin, we used harsh conditions (6N NaOH/EtOH, 50 °C, 12 h) to deprotect the trichloroacetamide.
  • 35
    • 0001741549 scopus 로고
    • Review on the Overman rearrangement: (a) Overman, L. E. Acc. Chem. Res. 1980, 13, 218-224.
    • (1980) Acc. Chem. Res. , vol.13 , pp. 218-224
    • Overman, L.E.1
  • 36
    • 0003085313 scopus 로고    scopus 로고
    • Helmchen, G.; Hoffmann, R. W.; Mulzer, J.; Schaumann, E., Eds.; Thieme: Stuttgart
    • (b) Ritter, K. In Houben-Weyl. Stereoselective Synthesis. E 21, Vol. 9; Helmchen, G.; Hoffmann, R. W.; Mulzer, J.; Schaumann, E., Eds.; Thieme: Stuttgart, 1996; p 5677-5699.
    • (1996) Houben-Weyl. Stereoselective Synthesis , vol.9 E 21 , pp. 5677-5699
    • Ritter, K.1
  • 39
    • 84920310458 scopus 로고    scopus 로고
    • note
    • Treatment of 6 with benzylamine hydrochloride in DMF at 100 °C for 3.5 h gave a mixture of the dibenzylguanidinium chloride 7 (23% from 5) and the urea 5.
  • 41
  • 42
    • 84920310457 scopus 로고    scopus 로고
    • We have not examined Birch reduction conditions for debenzylation, because we considered that such conditions would not be compatible with a variety of functional groups of tetrodotoxin molecule
    • We have not examined Birch reduction conditions for debenzylation, because we considered that such conditions would not be compatible with a variety of functional groups of tetrodotoxin molecule.
  • 46
    • 2542433188 scopus 로고    scopus 로고
    • note
    • 4, see: (a) Carisen, P. H.; Katsuki, T.; Martin, V. S.; Sharpless, K. B. J. Org. Chem. 1981, 46, 3936-3938. formula presented
  • 49
    • 84920310455 scopus 로고    scopus 로고
    • note
    • The by-product was tetraol iii as a single stereoisomer (18%) whose stereochemistry (*) was not determined. formula presented
  • 50
    • 84920310454 scopus 로고    scopus 로고
    • note
    • 2) also yielded the product, but the reactions were very slow.
  • 52
    • 84920310453 scopus 로고    scopus 로고
    • note
    • The structure was iv, which was hydrogenated to give guanidinium compound v having no aminal moiety found in tetrodotoxin. formula presented
  • 53
    • 84920310452 scopus 로고    scopus 로고
    • note
    • 1H NMR spectrum. These ratios were comparable to those of the debenzylated products 3a and 3b.
  • 54
    • 84920310451 scopus 로고    scopus 로고
    • General experimental details have been described: réf. 26
    • General experimental details have been described: réf. 26.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.