中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2,5-dimethoxybenzyl vinyl ether | 71255-03-3 | C11H14O3 | 194.23 |
—— | 4,7-dimethoxy-phthalide | 64019-78-9 | C10H10O4 | 194.187 |
4,7-二甲氧基-2-苯并呋喃-1,3-二酮 | 3,6-dimethoxyphthalic anhydride | 14597-12-7 | C10H8O5 | 208.171 |
—— | 3,6-dimethoxyphthalic acid | 64019-77-8 | C10H10O6 | 226.186 |
对二甲氧基苯甲醇 | 2,5-dimethoxybenzyl alcohol | 33524-31-1 | C9H12O3 | 168.192 |
A convergent AB + CD route to daunomycinone (1) is described. The AB segment is synthesized from the Diels–Alder adduct (3) of an isobenzofuran and methyl vinyl ketone by means of an unusual 5-endo–trig cleavage (3 → 4). The CD half (9) is combined with the AB by the Kraus annelation technique to provide a 9-deoxy daunomycinone derivative (12a) which is subsequently oxygenated.