作者:Sin-Wei Liu、He-Chu Hsu、Chiao-Hsin Chang、Hui-Hsu Gavin Tsai、Duen-Ren Hou
DOI:10.1002/ejoc.201000691
日期:2010.9
Total synthesis of (–)-lentiginosine (1) was achieved in nine steps from (3R,4R)-3,4-dihydroxy-1,5-hexadiene (2). Cross metathesis, vinyl addition and DDQ oxidation were applied to generate the key 3-oxonona-1,4,8-triene 6, which was cyclised to 4-oxopiperidine 7 by diastereoselective double aza-Michael reaction. Both theoretical and empirical studies support that the stereochemical assignment of the
从 (3R,4R)-3,4-二羟基-1,5-己二烯 (2) 分九步完成 (-)- 扁豆苷 (1) 的全合成。应用交叉复分解、乙烯基加成和 DDQ 氧化生成关键的 3-oxonona-1,4,8-triene 6,通过非对映选择性双氮杂-迈克尔反应将其环化为 4-氧代哌啶 7。理论和实证研究都支持主要迈克尔加合物的立体化学分配是所需的 (2R)-4-氧代哌啶 7。