Synthesis of Actinomycetes natural products JBIR-94, JBIR-125, and related analogues
摘要:
The synthesis of the natural products JBIR-94, DCP, DFP, and CFP is reported. A strategy for the coupling of ferulic or coumaric acid to putrescine is described. We determined that EDCI was the most effective coupling agent for this synthesis. In addition amide coupling with saturated cinnamic acids derivatives provided the best yield. The synthesis of JBIR-125 is accomplished through a novel synthesis of differentially protected spermidine. Preliminary bioassay data demonstrated that all five compounds were active against Pseudomonas aeruginosa. (C) 2015 Elsevier Ltd. All rights reserved.
The first totalsyntheses of new monoterpene alkaloids (-)-incarvilline, (+)-incarvine C, and (-)-incarvillateine, corresponding to the natural enantiomers, have been accomplished. The strategy for the synthesis of these natural products utilized 6-epi-incarvilline as a common precursor, which was assembled by a three-component coupling reaction using (4S)-4-siloxy-2-cyclopenten-1-one to construct
The first totalsynthesis of dipiperamide A has been achieved by employing a solid-state photodimerization of an (E)-cinnamic acid derivative. This critical step results in the cyclobutane ring, which exists in the natural product, with full control of the regio- and stereochemistry at the four stereogenic centers. Results from these studies indicate that the proposed stereostructure of natural dipiperamide
SAR studies on truxillic acid mono esters as a new class of antinociceptive agents targeting fatty acid binding proteins
作者:Su Yan、Matthew W. Elmes、Simon Tong、Kongzhen Hu、Monaf Awwa、Gary Y.H. Teng、Yunrong Jing、Matthew Freitag、Qianwen Gan、Timothy Clement、Longfei Wei、Joseph M. Sweeney、Olivia M. Joseph、Joyce Che、Gregory S. Carbonetti、Liqun Wang、Diane M. Bogdan、Jerome Falcone、Norbert Smietalo、Yuchen Zhou、Brian Ralph、Hao-Chi Hsu、Huilin Li、Robert C. Rizzo、Dale G. Deutsch、Martin Kaczocha、Iwao Ojima
DOI:10.1016/j.ejmech.2018.04.050
日期:2018.6
cardiotoxicity concerns. Compounds 4f, 4j and 4k showed excellent selectivity for FABP5 and would serve as other new lead compounds. Compound 3a possessed high affinity and high selectivity for FABP7. Compounds with moderate to high affinity for FABP5 displayed antinociceptive effects in mice while compounds with low FABP5 affinity lacked in vivo efficacy. In vivo pain model studies in mice revealed that exceeding
Synthesis of Actinomycetes natural products JBIR-94, JBIR-125, and related analogues
作者:Rafiq Taj、John L. Sorensen
DOI:10.1016/j.tetlet.2015.11.020
日期:2015.12
The synthesis of the natural products JBIR-94, DCP, DFP, and CFP is reported. A strategy for the coupling of ferulic or coumaric acid to putrescine is described. We determined that EDCI was the most effective coupling agent for this synthesis. In addition amide coupling with saturated cinnamic acids derivatives provided the best yield. The synthesis of JBIR-125 is accomplished through a novel synthesis of differentially protected spermidine. Preliminary bioassay data demonstrated that all five compounds were active against Pseudomonas aeruginosa. (C) 2015 Elsevier Ltd. All rights reserved.