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Volumn 10, Issue 14, 1999, Pages 2765-2773

New efficient synthesis of (3R,4S)-3-methyl-3-hydroxy-4-phenyl-β-lactam

Author keywords

[No Author keywords available]

Indexed keywords

1,3 DIOXOLANE DERIVATIVE; ALDEHYDE DERIVATIVE; BETA LACTAM DERIVATIVE; IMINE; LACTIC ACID; LITHIUM DERIVATIVE; TAXOID;

EID: 0033575373     PISSN: 09574166     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0957-4166(99)00288-8     Document Type: Article
Times cited : (4)

References (48)
  • 1
    • 0001843250 scopus 로고
    • Taxane Anticancer Agents: Basic Science and Current Status
    • American Chemical Society: Washington, DC
    • (a) Taxane Anticancer Agents: Basic Science and Current Status; Georg, G. I.; Chen, T. T.; Ojima, I.; Vyas, D. M., Eds.; ACS Symposium Series 583; American Chemical Society: Washington, DC, 1995;
    • (1995) ACS Symposium Series , vol.583
    • Georg, G.I.1    Chen, T.T.2    Ojima, I.3    Vyas, D.M.4
  • 9
    • 0004028961 scopus 로고
    • Springer-Verlag: Berlin
    • Dustin, P. In Microtubules; Springer-Verlag: Berlin, 1978.
    • (1978) Microtubules
    • Dustin, P.1
  • 30
    • 85069134291 scopus 로고    scopus 로고
    • European Patent Application, 1990, EP 400971
    • Holton, R. A. European Patent Application, 1990, EP 400971; (b) Chem. Abstr. 1990, 114, 164568q.
    • Holton, R.A.1
  • 31
    • 3743147656 scopus 로고
    • Holton, R. A. European Patent Application, 1990, EP 400971; (b) Chem. Abstr. 1990, 114, 164568q.
    • (1990) Chem. Abstr. , vol.114
  • 39
    • 0003598098 scopus 로고
    • Scheffold, R., Ed.; Salle + Sauerländer: Aarau
    • (b) Seebach, D.; Hungerbühler, E. In Modern Synthetic Methods; Scheffold, R., Ed.; Salle + Sauerländer: Aarau, 1980; Vol. 2, pp. 91-171.
    • (1980) Modern Synthetic Methods , vol.2 , pp. 91-171
    • Seebach, D.1    Hungerbühler, E.2
  • 43
    • 85069129710 scopus 로고    scopus 로고
    • note
    • Trace amounts (<5%) of a mixture of (3R,4s)- and (3R,4R)-3-hydroxy-3-trimethylsilyl-hydroxy-4-phenyl-β-lactams were also formed.
  • 45
    • 33947468884 scopus 로고
    • Compound (1′R,2S,5R)-5 is formed through a Zimmermann-Traxler transition state with the hydrogen of the imine, rather than the phenyl substituent, over the face of the dioxolanone ring. The formation of (1′S,2S,5R)-4 as the major isomer may be due to the steric repulsion between the methyl substituent of the enolate of (2S,5S)-1a and the phenyl substituent of the imine 2. See: Zimmermann, H.; Traxler, M. J. Am. Chem. Soc. 1957, 79, 1920.
    • (1957) J. Am. Chem. Soc. , vol.79 , pp. 1920
    • Zimmermann, H.1    Traxler, M.2
  • 46
    • 0001665760 scopus 로고    scopus 로고
    • For a detailed description of these side products see: (a) Seebach, D.; Naef, R.; Calderari, G. Tetrahedron 1984, 40, 1313-1324; (b) see Ref. 12c.
    • (1984) Tetrahedron , vol.40 , pp. 1313-1324
    • Seebach, D.1    Naef, R.2    Calderari, G.3
  • 47
    • 0001665760 scopus 로고    scopus 로고
    • see Ref. 12c
    • For a detailed description of these side products see: (a) Seebach, D.; Naef, R.; Calderari, G. Tetrahedron 1984, 40, 1313-1324; (b) see Ref. 12c.
  • 48
    • 85069133591 scopus 로고    scopus 로고
    • note
    • It is worth noting that the O-TMS protected β-lactam 15 can be easily transformed into the corresponding N-t-Boc-protected 2-methyl-phenylisoserine methyl ester via acylation at the nitrogen atom with di-tert-butyl dicarbonate followed by methanolysis. See Ref. 11.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.