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Volumn 51, Issue 23, 1995, Pages 6397-6410

A practical synthesis of an HIV protease inhibitor intermediate - diastereoselective epoxide formation from chiral α-aminoaldehydes

Author keywords

[No Author keywords available]

Indexed keywords

ANTIVIRUS AGENT; PROTEINASE INHIBITOR; UREA DERIVATIVE;

EID: 0029019630     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4020(95)00309-V     Document Type: Article
Times cited : (45)

References (35)
  • 11
    • 0028314331 scopus 로고
    • An expedient approach to (2R,3S)-3-azido-1,2-epoxy-4-phenyl butane: A key intermediate for HIV protease inhibitors
    • (1994) Tetrahedron: Asymmetry , pp. 755
    • Gurjar1    Devi2
  • 22
    • 84916507807 scopus 로고    scopus 로고
    • The chloromethylketone intermediate (1) can be purchased from BACHEM at $1200–1600/kg on a contracted basis, however, this high cost could make the use of this starting material on large scale synthesis cost-prohibitive.
  • 26
    • 84916505509 scopus 로고    scopus 로고
    • L-Phenylalaninol can be purchased from many bulk suppliers such as Newport Synthesis Ireland Ltd, Nutrasweet Company (US) or Degussa (Germany) in multikilogram quantities.
  • 31
    • 84916517033 scopus 로고    scopus 로고
    • The first preparation of chiral functionalised ketones and epoxides was reported during the preparation of this manuscript. Barleunga, J.; Baragana, B.; Alonso, A.; Concellon, J. J. Chem. Soc., Chem. Comm., 1994, 969.
  • 32
    • 84916462449 scopus 로고    scopus 로고
    • Structures were confirmed by NMR analysis of reaction products after purification by chromatography.
  • 33
    • 84916479742 scopus 로고    scopus 로고
    • The diastereomeric ratio was determined by both proton NMR and HPLC analyses.
  • 34
    • 84916511830 scopus 로고    scopus 로고
    • The yields of the mixture of epoxides (9a + 9b) in the crude reaction mixture were assayed to be approximately 85 % by quantititative HPLC analysis. The yields of the isolated epoxides might be lower due decompositon during chromatography.
  • 35
    • 84916479128 scopus 로고    scopus 로고
    • Methylene chloride or ethyl acetate can be substituted for tetrahydrofuran.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.