Strategies and Tactics for Natural Products Synthesis

天然产物合成的策略和策略

• 批准号: 7340231
• 负责人: GARY ALLEN SULIKOWSKI
• 金额: $ 5.49万
• 依托单位: VANDERBILT UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7340231
• 关键词: 2-cyclohexen-1-one; Acids; Actinobacteria class; Actinomyces; Alkaloids; Antibiotics; Area; Biological; Biological Factors; Carbon; Class; Complex; Development; Diels Alder reaction; Elements; Enterococcus faecium; Fermentation; Goals; Gram-Positive Bacteria; Halogens; Marines; Methods; Nitrogen; Numbers; Object Attachment; Organic Synthesis; Parents; Reporting; Research; Rest; Route; Spottings; Staphylococcus aureus; Stemona; Structure; Universities; Utah; base; chemical synthesis; interest; lomaiviticin A; lomaiviticin B; neotuberostemonine; novel; novel strategies; piperidine; programs; stenine; upenamide

The long-term objective of this research program is to advance the practice of complex molecule synthesis. Special emphasis is placed on natural products that contain nitrogen since an unusually large number of pharmacologically active compounds incorporate this element within their structure. Despite the many advances in organic synthesis in the past 20th century the efficient and economical synthesis of complex natural products remains a challenging endeavor. Our plan is to introduce new inexpensive building blocks to the field of organic synthesis for use in asymmetric synthesis of nitrogen heterocycles. These building blocks would expedite the chemical synthesis of the rare marine alkaloid upenamide, the stemona alkaloids and 2-substituted piperidine alkaloids. We also present a plan for the synthesis of Iomaiviticins A and B, secondary metabolites isolated from fermentation of a marine derived actinomycetes. Lomaiviticins A and B are potent antibiotics against Gram-positive bacteria Staphylococcus aureus and Enterococcus faecium (MIC 6-25 ng/spot). An unusual structural feature of the Iomaiviticins is the incorporation of two diazo groups within their structure.

该研究计划的长期目标是推进复杂分子合成的实践。 特别强调的是含有氮的天然产品，因为不寻常的大量的 生物活性化合物在其结构中包含这种元素。尽管有许多 综述了世纪有机合成的进展，介绍了高效、经济的络合物合成方法 天然产品仍然是一项具有挑战性的奋进。我们的计划是引进新的廉价建筑材料 涉及用于氮杂环的不对称合成的有机合成领域。这些建筑 块将加快化学合成的稀有海洋生物碱upenamide，百部生物碱 和2-取代的哌啶生物碱。我们还提出了合成Iomaiviticins A和B的方案， 从海洋来源的放线菌发酵中分离的次级代谢产物。洛麦维他菌素A和B 对革兰氏阳性菌金黄色葡萄球菌和屎肠球菌是有效的抗生素 (MIC 6-25纳克/斑点）。Iomaiviticins的一个不寻常的结构特征是引入了两个重氮基团 在他们的结构中。

项目成果

A concise Diels-Alder strategy leading to congeners of the ABC ring system of the marine alkaloid 'upenamide.

简明的 Diels-Alder 策略导致海洋生物碱 upenamide 的 ABC 环系统的同系物。

• DOI: 10.1016/j.tetlet.2016.05.102
• 发表时间: 2016
• 期刊: Tetrahedron letters
• 影响因子: 1.8
• 作者: Wenzler,MartaE;Melancon,BruceJ;Sulikowski,GaryA
• 通讯作者: Sulikowski,GaryA

An unexpected effect of acetal stereochemistry on the course of its reductive cleavage.

缩醛立体化学对其还原裂解过程的意外影响。

• DOI: 10.1016/j.tetlet.2016.06.067
• 发表时间: 2016
• 期刊: Tetrahedron letters
• 影响因子: 1.8
• 作者: Wenzler,MartaE;Sulikowski,GaryA
• 通讯作者: Sulikowski,GaryA

Formation of the BC ring system of upenamide via a Staudinger/aza-Wittig reaction.

通过 Staudinger/aza-Wittig 反应形成奥佩酰胺的 BC 环系统。

• DOI: 10.1021/ol702255k
• 发表时间: 2007
• 期刊: Organic letters
• 影响因子: 5.2
• 作者: Luo,Zhushou;Peplowski,Katherine;Sulikowski,GaryA
• 通讯作者: Sulikowski,GaryA