Seven New and Two Known Lipopeptides as well as Five Known Polyketides: The Activated Production of Silent Metabolites in a Marine-Derived Fungus by Chemical Mutagenesis Strategy Using Diethyl Sulphate
Solution phase synthetic approach to fellutamide B
摘要:
A convenient solution phase approach for the synthesis of fellutamide B with efficient purification techniques has been demonstrated on the molecule for the first time. The strategy involves the use of natural amino acids as starting materials and classical peptide coupling reactions. The synthesis has been achieved in 10 steps with overall yield of 26.7% making the synthesis facile. (C) 2015 Elsevier Ltd. All rights reserved.
The totalsyntheses of the marine-derived lipopeptide natural product fellutamide B and deoxy-fellutamides B, C, and D are reported. These compounds were accessed through a novel solid-phase synthetic strategy using Weinreb amide-derived resin. As part of the synthesis, a new enantioselective route to (3R)-hydroxy lauric acid was developed utilizing a Brown allylation reaction followed by an oxidative
报告了海洋衍生的脂肽天然产物 flutamide B 和脱氧 fellutamides B、C 和 D 的全合成。这些化合物是通过使用 Weinreb 酰胺衍生树脂的新型固相合成策略获得的。作为合成的一部分,利用布朗烯丙基化反应和氧化裂解-氧化序列作为关键步骤开发了一种新的 (3R)-羟基月桂酸的对映选择性路线。这些天然产物和天然产物类似物的活性也在体外针对结核分枝杆菌进行了评估。
Neurotrophic peptide aldehydes: Solid phase synthesis of fellutamide B and a simplified analog
作者:John S. Schneekloth、John L. Sanders、John Hines、Craig M. Crews
DOI:10.1016/j.bmcl.2006.04.029
日期:2006.7
have been used to complete the total synthesis of the neurotrophic lipopeptide aldehyde fellutamide B (2). The beta-hydroxy aliphatic tail was prepared by regioselective reductive opening of a cyclic sulfate, and later coupled to a solid phase resin. The synthetic compound was then examined in cytotoxicity and nerve growth factor (NGF) induction assays. A simplified analog of fellutamide B also showed
已使用固相和液相合成方法的组合来完成神经营养性脂肽醛非鲁胺 B (2) 的全合成。β-羟基脂肪族尾部是通过环状硫酸盐的区域选择性还原开环制备的,然后与固相树脂偶联。然后在细胞毒性和神经生长因子 (NGF) 诱导试验中检查合成化合物。非鲁胺 B 的简化类似物也显示出活性。
Total synthesis of fellutamides, lipopeptide proteasome inhibitors. More sustainable peptide bond formation
作者:Michael C. Pirrung、Fa Zhang、Sudhakar Ambadi、Y. Gangadhara Rao
DOI:10.1039/c6ob01233g
日期:——
Solution-phase syntheses of three bioactive natural products of mixed polypeptide–polyketide biogenesis, fellutamides A, B, and C, have been achieved. Three peptide bonds are generated without the use of coupling reagents in each synthesis of the fellutamides, which act against proteasomes.