[EN] MODULAR SYNTHESES OF DISCOIPYRROLE TYPE ALKALOIDS AND ANALOGUES<br/>[FR] SYNTHÈSE MODULAIRE D'ALCALOÏDES DE TYPE DISCOIPYRROLE ET ANALOGUES
申请人:THE AUSTRALIAN NAT UNIV
公开号:WO2017100819A1
公开(公告)日:2017-06-22
The present invention relates to methods for preparing a variety of discoipyrrole compounds and analogues using an oxidative cyclisation reaction as one of the steps. The present invention also relates to novel discoipyrrole analogues, pharmaceutical compositions comprising these compounds, and to their use in therapy, in particular in the treatment of disease states or conditions mediated by the discoidin domain receptor 2 (DDR2).
Total Syntheses of Discoipyrroles A, B, and C, Three Marine Natural Products
作者:Gaurav G. Dake、Krishna P. Kaliappan
DOI:10.1021/acs.joc.4c00462
日期:2024.4.19
Herein, we describe our efforts culminating in the totalsyntheses of discoipyrroles A, B, and C in 6, 6, and 7 steps respectively with excellent overall yield. Totalsyntheses of these unique natural products have been accomplished involving microwave-mediated Paal–Knorr pyrrole synthesis, Pd-catalyzed carbonylative transformation, and MoOPH (Vedejs reagent) oxidation as key reactions to construct
Discoipyrroles A–D: Isolation, Structure Determination, and Synthesis of Potent Migration Inhibitors from <i>Bacillus hunanensis</i>
作者:Youcai Hu、Malia B. Potts、Dominic Colosimo、Mireya L. Herrera-Herrera、Aaron G. Legako、Muhammed Yousufuddin、Michael A. White、John B. MacMillan
DOI:10.1021/ja403412y
日期:2013.9.11
Discoidin domain receptor 2 (DDR2) is a receptor tyrosine kinase involved in a variety of cellular response pathways, including regulation of cell growth, proliferation, and motility. Using a newly developed platform to identify the signaling pathway/molecular target of natural products, we identified a family of alkaloid natural products, discoipyrroles A-D (1-4), from Bacillus hunanensis that inhibit the. DDR2 signaling pathway. The structure of 1-4, determined by detailed two-dimensional (2D) NMR methods and confirmed by X-ray crystallographic analysis has an unusual 3H-benzo[d]pyrrolo] [1,3]oxazine-3,S-dione core. Discoipyrroles A-D potently inhibit DDR2 dependent migration of BR5 fibroblasts and show selective cytotoxicity to DDR2 mutant lung cancer cell lines (IC50 120-400 nM). Examination of the biosynthesis has led to the conclusion that the discoipyrroles are formed through a nonenzymatic process, leading to a one-pot total synthesis of 1.