STEREO SELECTIVE PREPARATION OF HEXAHYDRO DIBENZO PRYANONES

摘要

Dibenzopyranones (I; R4 = C5-10 alkyl, C5-10 alkenyl, C5-8 cycloalkyl or C5-8 cycloalkenyl) useful as analgesics, antidepressants, and entianxiety agents (no data) were prepd. Thus, 1.6g (+)-apoverbenone was treated with 2.8g 3,5-(HO)2-C6H3CMe2(CH2)5Me to give 720 mg I[R4 = CMe2(CH2)5Me .