Stereoselective Syntheses of the C(1)−C(9) Fragment of Amphidinolide C
作者:Robert H. Bates、J. Brad Shotwell、William R. Roush
DOI:10.1021/ol801852j
日期:2008.10.2
Stereoselective syntheses of the C(1)-C(9) fragments 18 and 28 of amphidinolide C have been developed. The first-generation sequence involves a diastereoselective chelate-controlled [3 + 2]-annulation reaction of 6 and 7, while the second-generation synthesis involves an intramolecular hetero-Michael cyclization of 8.
A Formal Synthesis of the C1−C9 Fragment of Amphidinolide C Employing the Tamaru Reaction
作者:Mahesh P. Paudyal、Nigam P. Rath、Christopher D. Spilling
DOI:10.1021/ol100959a
日期:2010.7.2
Homoallylation of aldehydes with isoprene and triethylborane catalyzed by Ni(acac)2 gave hydroxyalkenes in good yield with excellent regio- and stereoselectivity. Cross metathesis of the hydroxyalkenes with methyl acrylate using second-generation Grubbs catalyst and copper(I) iodide afforded α,β-unsaturated esters, which underwent cyclization in the presence of DBU to produce tetrahydrofurans with
Studies toward the Synthesis of Amphidinolide C1: Stereoselective Construction of the C(1)–C(15) Segment
作者:Sheila Namirembe、Lu Yan、James P. Morken
DOI:10.1021/acs.orglett.0c03134
日期:2020.12.4
An enantioselective synthesis of the C(1)–C(15) segment of the marine natural product amphidinolide C has been accomplished by a route that includes a stereoselective boron–Wittig reaction to furnish a trisubstituted alkenylboronate. In addition, the route employs enantioselective alkene diboration to install the C(6) hydroxyl group which undergoes intramolecular conjugate addition to establish a tetrahydrofuran
海洋天然产物两栖内酯 C 的 C(1)–C(15) 片段的对映选择性合成已通过包括立体选择性硼-Wittig 反应以提供三取代烯基硼酸酯的路线完成。此外,该路线采用对映选择性烯烃二硼化来安装C(6)羟基,该羟基经过分子内共轭加成形成四氢呋喃环。最后,完成催化 Suzuki-Miyaura 交叉偶联以构建 C(9)-C(10) 键。