Protecting-Group-Free Total Syntheses of Rubrolide R and S
作者:Mathias Schacht、Gordon Jacob Boehlich、Jessica de Vries、Stephanie Bertram、Gülsah Gabriel、Phyllis Zimmermann、Peter Heisig、Nina Schützenmeister
DOI:10.1002/ejoc.201700158
日期:2017.4.3
The two marine natural products rubrolide R (1) and S (2) were synthesised in only three linear steps starting from commercially available tetronic acid without using protecting-group chemistry. Key steps in the syntheses were the Pd-catalysed Suzuki–Miyaura cross-coupling followed by a vinylogous aldol condensation. Both compounds have been tested for their antibiotic and antiviral activities. At
两种海洋天然产物 rubrolide R (1) 和 S (2) 仅通过三个线性步骤从市售的特电子酸开始合成,不使用保护基化学。合成中的关键步骤是 Pd 催化的 Suzuki-Miyaura 交叉偶联,然后是乙烯基羟醛缩合。两种化合物均已测试其抗生素和抗病毒活性。在 10 µm rubrolide R (1) 和 S (2) 的浓度下,检测到季节性流感病毒 (H3N2) 和大流行猪流感病毒 (pH1N1) 的病毒滴度降低了 2-log 和 1.5-log,分别。
Efficient, collective synthesis and nitric oxide inhibitory activity of rubrolides E, F, R, S and their derivatives
作者:Kongara Damodar、Jin-Kyung Kim、Jong-Gab Jun
DOI:10.1016/j.tetlet.2016.11.096
日期:2017.1
tandem allylic hydroxylation/intramolecular cyclization and Knoevenagel condensation. Next, in their inhibitoryactivity towards nitricoxide (NO) production in lipopolysaccharide-induced RAW 264.7 macrophages as an indicator of anti-inflammatory activity, all compounds displayed good inhibitoryactivity in a concentration-dependent manner. None of the compound exhibited notable cytotoxicity at the highest
Concise, stereocontrolled and modular syntheses of the anti-influenza rubrolides R and S
作者:Thaís A. Moreira、Raphaël Lafleur-Lambert、Luiz C.A. Barbosa、John Boukouvalas
DOI:10.1016/j.tetlet.2019.151307
日期:2019.12
The fungal metabolites rubrolide R and S were synthesized in concise, entirely stereoselective fashion through the combined use of bromine-stereodirected vinylogous aldol condensation (SVAC) and Suzuki cross-coupling. A bioinspired, high-yield conversion of rubrolide R to rubrolide S is also reported.