Da. Horne et al., Biomimetic synthesis of the neolignans kadsurenone, denudatin B, O-methyl-liliflodione, and liliflol B, TETRAHEDR L, 40(30), 1999, pp. 5443-5447
Synthesis of (+/-)-kadsurenone (1), (+/-)-denudatin B (2), (+/-)-O-methyl-l
iliflodione (3a), and (+/-)-liliflol B (14) is described. The key synthetic
step is a biomimetic cationic cycloaddition between E- or Z-1,2-dimethoxy-
4-propenylbenzene (11) and ortho-quinone monoketal 10. (C) 1999 Elsevier Sc
ience Ltd. All rights reserved.