(1β,2α,4α,5β,6β)-3,8-Dioxatricyclo[3.2.1.02,4]octane-6-carboxylic acid methyl ester

    Parameter     ppm  Hz

      D(A)         3.40
     
      D(B)         4.57
      D(C)         4.77
      D(D)         2.62
      D(E)         2.22
      D(F)         1.75
       J(B,C)          0.00
       J(B,D)          0.00
       J(B,E)          5.0
       J(B,F)          0.0
       J(C,D)          0.0
       J(C,E)          0.00
       J(C,F)          0.00
       J(D,E)          4.6
       J(D,F)          9.2
       J(E,F)        -12.6
     
      D(G)         3.73
     
     MARFISI,C. ET AL. ORG.MAGN.RESON. 17, 239 (1981)