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The urushiol diacetate was successfully separated by centrifugal rotation TLC on the silica gel coated with silver nitrate.The structure and configuration of key component of.urushiol (64.6%) were determined successfully by using 1H and 13C conventional method,DEPT technique,homo- and heteronuclear chemical shift correlation 2D-NMR,2D-J NMR,hftteronuclear relayed coherencetransfer 2D-NMR,and relaxation time T1 investigation.The as-signment of resonances for 1H and C were confirmed.There is plentyof evidence which shows that the key component of urushiol is3-(8’Z,11’E,13’Z-pentadecatrienyl)catechol.The results show that RELAY 2D-NMR new technique can be successfully applied to determining the structure of complicated unknown compounds.
The urushiol diacetate was successfully separated by centrifugal rotation TLC on the silica gel coated with silver nitrate. The structure and configuration of the key component of .urushiol (64.6%) were determined successfully by using 1H and 13C conventional methods, DEPT technique, homo- and heteronuclear chemical shift correlation 2D-NMR, 2D-J NMR, hftteronuclear relayed coherence metastasis 2D-NMR, and relaxation time T1 investigation. as as sign of of resonances for 1H and C was confirmed. There is plenty of evidence which shows that the key component of urushiol is 3- (8’Z, 11’E, 13’Z-pentadecatrienyl) catechol.The results show that RELAY 2D-NMR new technique can be successfully applied to determine the structure of complicated unknown compounds.