作者:John P. Grealis、Helge Müller-Bunz、Yannick Ortin、Michael Casey、Michael J. McGlinchey
DOI:10.1002/ejoc.201201063
日期:2013.1
with 2 M HCl in methanol to form isobavachalcone in an overall yield of 15 % over five steps. The X-ray crystal structures of 2,4-dihydroxy-3-iodoacetophenone (21) and of several prenylated chalcones are reported, including the elucidation of their hydrogen-bonding networks in the solid state. The synthetic route has been extended to include organometallic derivatives in which the 4-(methoxymethoxy)benzaldehyde
Isobavachalcone [2',4,4'-trihydroxy-3'-(3"-methyl-2"-butenyl)chalcone, 1] 是一种异戊二烯化查尔酮,具有广泛的生物活性,特别是对抗神经母细胞瘤,神经母细胞瘤是最常见的癌症婴儿期。它目前可以通过从 Psoralea corylifolia 和许多其他非洲和亚洲植物中提取,以 190 美元/mg 的价格在商业上获得。已经探索了几种合成路线,最有效的程序包括钯催化的 3-碘-2,4-双(甲氧基甲氧基)苯乙酮(25)与异戊二烯三丁基锡的 Stille 偶联,Claisen-Schmidt 缩合与 4-(甲氧基甲氧基)苯甲醛形成三重 MOM 保护的异戊二烯查耳酮 27,最后用甲醇中的 2 M HCl 脱保护,以 15% 的总产率在五个步骤中形成异巴伐他酮。2的X射线晶体结构,4-dihydroxy-3-iodoacetophenone