title: First total syntheses of (+/-)-penicillones A and B.
abstract: The first total syntheses of (+/-)-penicillones A (1) and B (2) have been accomplished from 2-methoxy-4,6-dimethylphenol (7) in 9 and 8 synthetic steps, respectively. Intramolecular Diels-Alder reaction of masked o-benzoquinone 8 and aqueous acid-catalyzed intramolecular aldol reaction are the key steps.
authors: Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan.
authors: Day-Shin
authors: DS
authors: Hsu
authors: Chun-Chen
authors: CC
authors: Liao