Expedient syntheses of naturally occurring (±)-3-benzylphthalides and (±)-3-aryl-8-hydroxy-3,4-dihydroisocoumarins: Structure revision of the (±)-3-benzylphthalide isolated from Frullania falciloba
作者:Raghao S. Mali、Kantipudi N. Babu、Prakash G. Jagtap
DOI:10.1039/b106268a
日期:——
A simple synthesis of (±)-3-benzyl-7-methoxyphthalides (1b, 1d and 4a–c) from 7-methoxyphthalides (3a–c) and a novel AlCl3-catalysed conversion of (±)-3-benzyl-7-methoxyphthalides (1d, 4a–c) to 4′-O-methylhydrangenol 5a, 4′,6-O,O-dimethylthunberginol-C 5b and related compounds (5c and 5d) is described.
从 7-甲氧基邻苯二甲酸盐 (3a-c) 简单合成 (±)-3-苄基-7-甲氧基邻苯二甲酸盐 (1b、1d 和 4a-c),以及新型 AlCl3 催化 (±)-3 苄基-7-甲氧基邻苯二甲酸盐 (1d、4a-c)转化为 4′-O-甲基海因根醇 5a、4′,6-O,O-二甲基小檗醇-C 5b 和相关化合物(5c 和 5d)。