The Total Synthesis of the Bioactive Natural Product Plantazolicin A and Its Biosynthetic Precursor Plantazolicin B
作者:Sabine Fenner、Zoe E. Wilson、Steven V. Ley
DOI:10.1002/chem.201603157
日期:2016.10.24
Herein, we describe our full investigations into the synthesis of the peptide‐derived natural product plantazolicin A, a compound that demonstrates promising selective activity against the causative agent of anthrax toxicity, and its biosynthetic precursor plantazolicin B. This report particularly focuses on the challenging preparation of the arginine containing thiazole fragment, including the development
Total Synthesis of the Posttranslationally Modified Polyazole Peptide Antibiotic Plantazolicin A
作者:Hiroki Wada、Huw E. L. Williams、Christopher J. Moody
DOI:10.1002/anie.201507062
日期:2015.12.7
The power of rhodium–carbene methodology in chemistry is demonstrated by the synthesis of a structurally complex polyazole antibiotic. Plantazolicin A, a novel soil‐bacterium metabolite, comprises a linear array of 10 five‐membered rings in two pentacyclic regions that derive from ribosomal peptidesynthesis followed by extensive posttranslational modification. The compound possesses potent antimicrobial
Total Syntheses of Linear Polythiazole/Oxazole Plantazolicin A and Its Biosynthetic Precursor Plantazolicin B
作者:Zoe E. Wilson、Sabine Fenner、Steven V. Ley
DOI:10.1002/anie.201410063
日期:2015.1.19
Plantazolicin A, a linear decacyclic natural product, exhibits desirable selective activity against the causative agent of anthrax toxicity. The total synthesis of plantazolicin A and itsbiosyntheticprecursorplantazolicinB was successfully achieved by an efficient, unified, and highly convergent route featuring dicyclizations to form 2,4‐concatenated oxazoles and the mild synthesis of thiazoles
Plantazolicin A 是一种线性十环天然产物,对炭疽毒性的病原体表现出理想的选择性活性。通过高效、统一、高度收敛的路线,通过双环化形成2,4-联恶唑以及由天然氨基酸温和合成噻唑,成功实现了植物唑菌素A及其生物合成前体植物唑菌素B的全合成。该报告代表了 Plantazolicin B 的首次合成,并包含了这两种天然产物的首个完整表征数据。
High-Temperature Boc Deprotection in Flow and Its Application in Multistep Reaction Sequences
作者:Andrew R. Bogdan、Manwika Charaschanya、Amanda W. Dombrowski、Ying Wang、Stevan W. Djuric
DOI:10.1021/acs.orglett.6b00378
日期:2016.4.15
qualitative yield of a wide variety of deprotected substrates within minutes using acetonitrile as the solvent and without the use of acidic conditions or additional workups. Highly efficient, multistepreaction sequences in flow are also demonstrated wherein no extraction or isolation was required between steps.