Rapid access to 6-bromo-5,7-dihydroxyphthalide 5-methyl ether by a CuBr2-mediated multi-step reaction: concise total syntheses of hericenone J and 5′-deoxohericenone C (hericene A)
作者:Shoji Kobayashi、Ami Ando、Hiroyuki Kuroda、Shota Ejima、Araki Masuyama、Ilhyong Ryu
DOI:10.1016/j.tet.2011.09.104
日期:2011.11
practical route to 6-bromo-5,7-dihydroxyphthalide 5-methyl ether, a versatile intermediate in the synthesis of hericenones and related bioactive polyphenols, was developed. The synthesis features a combination of tandem Michael addition-Claisen condensation and CuBr2-mediated multi-step reactions. With this product in hand, total syntheses of hericenone J and 5′-deoxohericenone C (hericene A) were
开发了一种实用的方法,以合成6-溴代5,7-二羟基邻苯二酚5-甲基醚(一种用于合成hericenones和相关生物活性多酚的多功能中间体)。该合成具有串联迈克尔加成-克莱森缩合和CuBr 2介导的多步反应的组合。使用该产品,可以实现hericenone J和5'-deoxohericenone C(hericene A)的全部合成。