In order to elucidate the structure-activity relationship of griseofulvin (1), (±)-6'-demethyl analog (3), 2'-demethoxy-6'-demethyldihydro analog (4), (±)-dechloro-6'-ethyl analog (5), (±)-dechloro-6'epi-ethyl analog (6), (±)-6'-ethyl analog (7) and (±)-6'-epi-ethyl analog (8) were synthesized by a Diels-Alder cycloaddition of alkylidene ketones (16, 17, 18, 19 and 20) with modified 1, 3-butadienes (21 or 22). Their biological activities were examined against fungi.
为了阐明
灰黄霉素的构效关系 (1), (±)-6'-去
甲基类似物 (3), 2'-去甲
氧基-6'-去
甲基二
氢类似物 (4), (±)-去
氯-6' -乙基类似物 (5)、(±)-
脱氯-6'表乙基类似物 (6)、(±)-6'-乙基类似物 (7) 和 (±)-6'-表乙基类似物 (8)通过亚烷基
酮(16、17、18、19和20)与改性1、3-
丁二烯(21或22)的Diels-Alder环加成反应合成。检查了它们针对真菌的
生物活性。