The (±)-6aα, 12aα, 12α-chromanochromanol acetate (11; R = Ac), representing the core structure of the insecticidal rotenoid alcohol (2), has been synthesised in six steps from the chromone (4); the cis,cis-stereochemistry is obtained in an intramolecular 6-exo aryl radical addition.
从
色酮(4)六步合成了(±)-6aα,12aα,12α-苯并二氢
色酚醇
乙酸盐(11 ; R = Ac),代表了杀虫性类
胡萝卜素醇(2)的核心结构。的顺式,顺式-立体
化学在分子内6-得到外芳基基团加成。