On the absolute structure of optically active neolignans containing a dihydrobenzo[b]furan skeleton
摘要:
Several optically pure neolignans containing a dihydrobenzo[b]furan skeleton were synthesized. Based on an X-ray crystallographic study and circular dichroism results, the absolute configurations of some naturally occurring neolignans, namely balanophonin (1), PGI(2) inducer (2), dehydrodiconiferyl alcohol-4-beta-D-glucoside (3), dehydroconiferyl alcohol (4) and 3',4-di-O-methyicedrusin (5) have been unambiguously established. (C) 1998 Elsevier Science Ltd. All rights reserved.