Total Synthesis of Sophoraflavanone H and Confirmation of Its Absolute Configuration
作者:Haruka Murakami、Tomohiro Asakawa、Yoshihiro Muramatsu、Ryo Ishikawa、Aiki Hiza、Yuta Tsukaguchi、Yohei Tokumaru、Masahiro Egi、Makoto Inai、Hitoshi Ouchi、Fumihiko Yoshimura、Tohru Taniguchi、Yoshinobu Ishikawa、Mitsuru Kondo、Toshiyuki Kan
DOI:10.1021/acs.orglett.0c01063
日期:2020.5.15
antimicrobial and antitumor drug development. Here we describe a total synthesis of 1 and its diastereomer. The dihydrobenzofuran and flavanone rings were constructed by a Rh-catalyzed asymmetric C-H insertion reaction and selective oxy-Michael reaction. The absolute configuration of 1 was established by X-ray crystallographic analysis and CD spectral investigation of synthetic derivatives.
Sophoraflavanone H(1)是具有杂化型结构的多酚,其中包含2,3-二芳基-2,3-二氢苯并呋喃和黄烷酮环部分。该化合物和相关类似物是抗微生物和抗肿瘤药物开发的有前途的线索。在这里,我们描述1及其非对映异构体的总合成。二氢苯并呋喃环和黄烷酮环是通过Rh催化的不对称CH插入反应和选择性的氧-迈克尔反应构建的。通过合成衍生物的X射线晶体学分析和CD光谱研究确定1的绝对构型。