作者:Kazuhiko Sakaguchi、Yuto Nishioka、Naoto Kinashi、Nao Yukihira、Tetsuro Shinada、Takahiro Nishimura、Hideki Hashimoto、Shigeo Katsumura
DOI:10.1055/s-0040-1707906
日期:2020.10
The stereocontrolled total synthesis of the allene and carbonyl conjugated apocarotenoids, paracentrone and 19-hexanoyloxyparacentrone 3-acetate, was achieved by sequential cross-coupling reactions using boronic acid ester and iodine- or tin-substituted C5 dienes, which were the building blocks for the elongation of the conjugated polyene systems at both terminals.
摘要 通过使用硼酸酯与碘或锡取代的C5二烯进行连续的交叉偶联反应,实现了烯丙基和羰基共轭的类胡萝卜素类,对中心酮和19-己酰氧基对中心酮3-乙酸酯的立体控制全合成。两个末端的共轭多烯体系的伸长率。