Total synthesis of penta-Me amurensin H and diptoindonesin G featuring a Rh-catalyzed carboacylation/aromatization cascade enabled by C C activation
摘要:
Oligostilbenoids represented a family of natural products, which contained one or several multifused benzofuran substructures and displayed promising biological activities towards cancer as well as immunological therapeutic targets. A convergent-divergent strategy featuring Rh-catalyzed carboacylation/aromatization cascade reaction based on C-C activation of benzocyclbutenones had been conceived. penta-Methyl amurensin H and diptoindolnesin G were successfully synthesized without any protecting groups, constituting a new entry towards oligostilbenoids' natural product synthesis. The synthesis completed within 10 steps for both natural products, suggesting conciseness and efficacy of the C-C activation in complex natural product synthesis. (C) 2019 Elsevier Ltd. All rights reserved.
Total synthesis of penta-Me amurensin H and diptoindonesin G featuring a Rh-catalyzed carboacylation/aromatization cascade enabled by C C activation
摘要:
Oligostilbenoids represented a family of natural products, which contained one or several multifused benzofuran substructures and displayed promising biological activities towards cancer as well as immunological therapeutic targets. A convergent-divergent strategy featuring Rh-catalyzed carboacylation/aromatization cascade reaction based on C-C activation of benzocyclbutenones had been conceived. penta-Methyl amurensin H and diptoindolnesin G were successfully synthesized without any protecting groups, constituting a new entry towards oligostilbenoids' natural product synthesis. The synthesis completed within 10 steps for both natural products, suggesting conciseness and efficacy of the C-C activation in complex natural product synthesis. (C) 2019 Elsevier Ltd. All rights reserved.
Synthesis of Oxygenated ortho-Methylbenzaldehydes via Aryne [2+2] Cycloaddition and Benzocyclobutenol Ring Opening
作者:Mark M. Maturi、Ken Ohmori、Keisuke Suzuki
DOI:10.2533/chimia.2018.870
日期:——
oxygenated ortho-methylbenzaldehyde derivatives, starting from commercially available bromoarenes, is described. The synthesis features the simultaneous and highly regioselective installation of both the methyl and the formyl group onto the benzene core via benzyne [2+2] cycloadditions with acetaldehyde lithium enolate to give the corresponding benzocyclobutenols in high yields. Bond-selective ring opening
Total synthesis of penta-Me amurensin H and diptoindonesin G featuring a Rh-catalyzed carboacylation/aromatization cascade enabled by C C activation
作者:Yuting Qin、Jun-Ling Zhan、Tian-tian Shan、Tao Xu
DOI:10.1016/j.tetlet.2019.02.040
日期:2019.3
Oligostilbenoids represented a family of natural products, which contained one or several multifused benzofuran substructures and displayed promising biological activities towards cancer as well as immunological therapeutic targets. A convergent-divergent strategy featuring Rh-catalyzed carboacylation/aromatization cascade reaction based on C-C activation of benzocyclbutenones had been conceived. penta-Methyl amurensin H and diptoindolnesin G were successfully synthesized without any protecting groups, constituting a new entry towards oligostilbenoids' natural product synthesis. The synthesis completed within 10 steps for both natural products, suggesting conciseness and efficacy of the C-C activation in complex natural product synthesis. (C) 2019 Elsevier Ltd. All rights reserved.