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Volumn 62, Issue 14, 2006, Pages 3221-3227

An improved procedure for the preparation of the β-hydroxy-α- alkyl fatty acid fragment of mycolic acids

Author keywords

Mycolic acid synthesis

Indexed keywords

BETA HYDROXY ALPHA FATTY ACID; FATTY ACID DERIVATIVE; MYCOLIC ACID; UNCLASSIFIED DRUG;

EID: 33644891313     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tet.2006.01.070     Document Type: Article
Times cited : (18)

References (37)
  • 22
    • 27844453864 scopus 로고    scopus 로고
    • Tetrahedron 61 2005 11939 11951
    • (2005) Tetrahedron , vol.61 , pp. 11939-11951
  • 28
    • 33644905601 scopus 로고    scopus 로고
    • Unpublished results
    • In the case of the homologue of (10 ) with 10 instead of nine methylene groups in the chain good yields were only achieved if the reaction was carried out as follows: Butyllithium (13.33 ml, 28 mmol, 2.1 M) was added to a stirred solution of diisopropylamine (3.73 ml, 26.66 mmol) in dry THF (120 ml) at -78°C under argon. The mixture was allowed to reach room temperature and stirred for 15 min. It was then cooled to -78°C and the ester (4.17 g, 12.12 mmol) in dry THF (45 ml) was added. The mixture was allowed to warm to -5°C over 2 h, stirred at 0-2°C for 0.5 h, then cooled to -70°C and 1-iodoprop-2-ene (1.55 ml, 17.0 mmol) and HMPA (6.32 ml, 36.4 mmol) in dry THF (10 ml) were added. The reaction was allowed to reach 0°C over 1.5 h and then quenched with aq ammonium chloride (10 ml) followed by brine (100 ml). The product was extracted with petrol-ethyl acetate (1/1, 3×100 ml). The combined organic layers were washed with water, dried and evaporated to give a pale yellow oil. Column chromatography eluting with 5:2 petrol and ethyl acetate gave the product as a colourless oil (2.56 g, 56%) (Al-Dulayymi, J. R. and Koza, G. Unpublished results).
    • Al-Dulayymi, J.R.1    Koza, G.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.