parts of Inula viscosa (Asteraceae) was developed. Acid 3 is an appropriate starting material for short, enantiospecific syntheses of β-eudesmol (1) and α-eudesmol (2), natural products featuring significant antiangiogenic and anti-Alzheimer properties. Synthesis of 1 was achieved in six steps and the synthesis of 2 in seven, producing overall yields of 52 and 41 %, respectively.(© Wiley-VCH Verlag GmbH
开发了一种有效的分离
倍半萜烯酸 (3) 的方法,该方法以多克规模的
提取物从 Inula viscosa(菊科)的地上部分获得。酸 3 是 β-eudesmol (1) 和 α-eudesmol (2) 的短对映特异性合成的合适起始材料,
天然产物具有显着的抗血管生成和抗阿尔茨海默病特性。1 分六步合成,2 分七步合成,总产率分别为 52% 和 41%。(© Wiley-
VCH Verlag GmbH & Co. KGaA,69451 Weinheim,德国,2009 年)