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 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。
Wewakazole B is a novel cyclodecapeptide with highly potent cytotoxic activity isolated from a sample of M. producens collected from the Red Sea. It contains nine common and three modified amino acid residues. The first totalsynthesis of Wewakazole B was successfully achieved on a gram scale, unambiguously confirming its structure. Notable features include the careful choice of amino acid-protecting
[EN] MASP INHIBITORY COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS INHIBITEURS DE MASP ET LEURS UTILISATIONS
申请人:BAYER AG
公开号:WO2020225095A1
公开(公告)日:2020-11-12
The present invention relates to novel Mannose-binding lectin (MBL)-associated serine protease (MASP) inhibitory compounds, as well as analogues and derivatives thereof, to processes for the preparation thereof, to the use thereof alone or in combinations for treatment and/or prevention of diseases and to the use thereof for production of medicaments for treatment and/or prevention of diseases, especially for treatment and/or prevention of renal and cardiovascular disorders and of ischemia reperfusion injuries.
Design rules for peptides with α, β-dehydro-residues: synthesis of a model peptide Boc-Ile-ΔAla-OCH3 and its crystal structures obtained from two different solvents
crystallized in space group P32 with four molecules in the asymmetric unit. In both structures the conformations of all the crystallographically independent molecules were almost identical. ΔAla adopted a planar conformation with the ϕ torsion angle having values centred at ±180° in all the molecules. The crystal structures in two different crystalline states showed that ΔAla induced a distorted inverse