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Volumn 28, Issue 28, 1987, Pages 3253-3256

Stereoselective synthesis of the middle (C10-C17) and right (C18-C30) segments and their coupling to complete a formal synthesis of the polyether antibiotic salinomycin

Author keywords

[No Author keywords available]

Indexed keywords

SALINOMYCIN;

EID: 0023250839     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(00)95485-6     Document Type: Article
Times cited : (38)

References (33)
  • 4
    • 84914285313 scopus 로고    scopus 로고
    • Salinomycin (1), isolated from Streptomyces albus, is a very important anticoccidial agent in the poultry industry and a marvelous total synthesis was achieved by Kishi.
  • 7
    • 84914285312 scopus 로고    scopus 로고
    • Unless otherwise noted, the numbering is based on that of salinomycin (1).
  • 8
    • 84914285311 scopus 로고    scopus 로고
    • The C10–C30 segment (4) is a retro-aldol and isomerization product of the 20-O-acetyl-1-ester derivative of 1 as well as a key intermediate in Kishi's synthesis.
  • 9
    • 84981833185 scopus 로고
    • Stoffwechselprodukte von Actinomyceten. 5. Mitteilung. �ber das Lacton der ?-Hydroxy-?, ??, ?-trimethyl-pimelins�ure, ein Abbauprodukt von Narbomycin, Pikromycin und Methymycin
    • (1956) Helvetica Chimica Acta , vol.39 , pp. 1785
    • Anliker1    Dvornik2    Gubler3    Heusser4    Prelog5
  • 13
    • 84914285309 scopus 로고    scopus 로고
    • 3 gave 9 with 57 : I stereoselection.
  • 14
    • 84914285308 scopus 로고    scopus 로고
    • b.
  • 15
    • 84914285307 scopus 로고    scopus 로고
    • A synthetic equivalent of 3 was also synthesized from a C21–C30 segment, an alkaline degradation product of 1, and will be reported soon.
  • 16
    • 84914285306 scopus 로고    scopus 로고
    • Since in Kishi's total synthesis of 1 introduction of the C20 chiral center was in uncontrol of stereochemistry, the desired product with the correct C20 configuration was minor and the undesired product was converted to the desired one after repeated recycles, though its efficiency was not so good.
  • 24
    • 84914285305 scopus 로고    scopus 로고
    • 2 in the usual way, but a side reaction forming a tetrahydrofuran derivative was unavoidable.
  • 26
    • 84914285304 scopus 로고    scopus 로고
    • 2CuLi at −93°C.
  • 27
    • 84914285303 scopus 로고    scopus 로고
    • This compound was almost 1 : 1 mixture with respect to the C21 acetal position.
  • 30
    • 84914285302 scopus 로고    scopus 로고
    • 28a, 28b, 28c and 28d were isolated in the ratio of 3.8 : 3.2 : 1.4 : 1.0. Configurations at the bisketal positions were variable in the presence of a trace of acid.
  • 31
    • 84914285301 scopus 로고    scopus 로고
    • 28c occurred.
  • 33
    • 84914285300 scopus 로고    scopus 로고
    • The left (C1–C10) segment has been synthesized from D-glucose in this laboratory and will be reported soon.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.