Inhibition of Adenosine 3', 5'-Cyclic Monophosphate Phosphodiesterase by Lignan Glucosides of Eucommia Bark

抄録

Studies were conducted on adenosine 3', 5'-cyclic monophosphate (cyclic AMP) phosphodiesterase inhibition by lignan glucosides from bark of Eucommia ulmoides OLIV. (Eucommiaceae). Various lignan diglucosides. (+)-syringaresinol di-O-β-D-glucopyranoside (1c), (+)-medioresinol di-O-β-D-glucopyranoside (2c), (+)-pinoresinol di-O-β-D-glucopyranoside (3c) and (+)-1-hydroxy-pinoresinol 4', 4"-di-O-β-D-glucopyranoside (4d), showed strong inhibitory activity.The structure-inhibitory activity relationships of the aglycone and its glucosides are discussed. The order of inhibitory effect was diglucoside ≩︀ aglycone > monoglucoside.