메뉴 건너뛰기




Volumn 69, Issue 12, 1996, Pages 3651-3658

Transformation of penicillins into 3-substituted Δ3-cephems through addition/cyclization of allenecarboxylates

Author keywords

[No Author keywords available]

Indexed keywords

3 CEPHEM 4 CARBOXYLIC ACID DERIVATIVE;

EID: 0030478250     PISSN: 00092673     EISSN: None     Source Type: Journal    
DOI: 10.1246/bcsj.69.3651     Document Type: Article
Times cited : (4)

References (35)
  • 28
    • 0029944259 scopus 로고    scopus 로고
    • 3-cephem 2f through chlorinative cyclization of allenecarboxylate 1 under aerobic conditions has been reported. H. Tanaka, R. Kikuchi, and S. Torii, Bull. Chem. Soc. Jpn., 69, 1391 (1996).
    • (1996) Bull. Chem. Soc. Jpn. , vol.69 , pp. 1391
    • Tanaka, H.1    Kikuchi, R.2    Torii, S.3
  • 32
    • 8044248903 scopus 로고    scopus 로고
    • note
    • 3-cephems 12; see Refs. 9 and 11.
  • 33
    • 8044225202 scopus 로고    scopus 로고
    • note
    • 3-cephem 2e was produced more efficiently when the same reaction was carried out in NMP; see Entry 1 in Table 3.
  • 34
    • 8044246494 scopus 로고    scopus 로고
    • note
    • The formation of a small amount of monochloro azetidinone 9 can be ascribed to protonation of the intermediate 5f, presumably with a trace amount of water contaminated in the solution. When the reaction was carried out in the presence of N,O-bis(trimethylsilyl)-acetamide for removing the trace amount of water, the side product 9 was not detected. However, the yield of 2f did not significantly change.
  • 35
    • 8044239544 scopus 로고    scopus 로고
    • note
    • 3-cephem with the corresponding lithium halides; see Ref. 6b.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.