| 
          c 
         
         -(-)-maplefuranone.gif)  
         
         
               
                  | 
                      (S)-(-)-Maple
                     furanone - less intense than the (R)-(+)-Maple
                     furanone enantiomer. 
                     
                     =
                     (5S)-(-)-5-ethyl-3-hydroxy-4-methylfuran-2(5H)-one 
                     
                     Ref: Atsufumi
                     Nakahashi, Yoshihiro Yaguchi, Nobuaki Miura,
                     Makoto Emura, and Kenji Monde, A Vibrational
                     Circular Dichroism Approach to the Determination
                     of the Absolute Configurations of Flavorous
                     5-Substituted-2(5H)-furanones, J. Nat. Prod.,
                     Article ASAP, Publication Date (Web): March 7,
                     2011 
                   | 
                
             
              
         
         c 
       | 
      
         
         
           -(+)-maplefuranone.gif)  
         
         
               
                  | 
                      (R)-(+)-Maple
                     furanone - possessed a significantly intense
                     maple syrup-like odor at 100 ppt solution in
                     H2O, while (S)-(-)-Maple furanone was
                     less intense. 
                     
                     = 
                     (5R)-(+)-5-ethyl-3-hydroxy-4-methylfuran-2(5H)-one 
                     
                     Ref: Atsufumi
                     Nakahashi, Yoshihiro Yaguchi, Nobuaki Miura,
                     Makoto Emura, and Kenji Monde, A Vibrational
                     Circular Dichroism Approach to the Determination
                     of the Absolute Configurations of Flavorous
                     5-Substituted-2(5H)-furanones, J. Nat. Prod.,
                     Article ASAP, Publication Date (Web): March 7,
                     2011 
                   | 
                
             
              
       |