Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (11): 2000.

• Articles • Previous Articles     Next Articles

Synthesis of Chiral 5-l-Menthyloxy-butyrolacto [3,4-d]isoxazoline Derivatives

HUANG Hai-Hong1, ZHANG Xiang1, LIN Zi-Yun1, CHEN Qing-Hua2   

  1. 1. Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China;
    2. Department of Chemistry, Beijing Normal University, Beijing 100875, China
  • Received:2002-09-26 Online:2003-11-24 Published:2003-11-24

Abstract: The in situ regioselective 1,3-dipolar cycloaddition of substituted benzaldoxime to 5-(R)-(l-menthyloxy)-2(5H)-furanone using calcium hypochlorite as the oxidant waSInvestigated.Several substituted butyrolacto[3,4-d]isoxazoline compounds containing two novel stereogenic chiral centers were obtained.The structures of the target compounds have been established via the FAB-HRMS, NMR data(involved 1DNOESY) and X-ray diffraction analysis.The characteristic chemical shifts of the γ-lactone ring protonSIn 1HNMR were also discussed and the configurations of substituted phenyl furoisoxazolines, the adducts of benzonitrile oxide to 5-(R)-(l-menthyloxy)-2(5H)-furanone, could be determined unambiguously by analyzing the HNMR ata.

Key words: Chiral5-l-menthyloxy-butyrolacto[3,4-d]isoxazoline, 1,3-Dipolar cycloaddition, Regioselective and stereoselective synthesis

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