Efficient synthesis of (R)-ochratoxin alpha, the key precursor to the mycotoxin ochratoxin A
摘要:
Two new routes for the synthesis of enantiomerically pure ochratoxin alpha ((3R)-OT alpha) are presented, which is the key intermediate for the synthesis of ochratoxin A (OTA) by coupling reaction with the amino acid (L)-phenylalanine. The key step of both routes is the one pot directed ortho-metalation/alkylation/lactonization of unprotected and suitably functionalized aromatic carboxylic acids, using lithium tetramethylpiperidide (LIMP) and (R)-propylene oxide. (C) 2012 Elsevier Ltd. All rights reserved.
Efficient synthesis of (R)-ochratoxin alpha, the key precursor to the mycotoxin ochratoxin A
摘要:
Two new routes for the synthesis of enantiomerically pure ochratoxin alpha ((3R)-OT alpha) are presented, which is the key intermediate for the synthesis of ochratoxin A (OTA) by coupling reaction with the amino acid (L)-phenylalanine. The key step of both routes is the one pot directed ortho-metalation/alkylation/lactonization of unprotected and suitably functionalized aromatic carboxylic acids, using lithium tetramethylpiperidide (LIMP) and (R)-propylene oxide. (C) 2012 Elsevier Ltd. All rights reserved.
Bright and stable luminescent probes for target engagement profiling in live cells
作者:N. Connor Payne、Alena S. Kalyakina、Kritika Singh、Mark A. Tye、Ralph Mazitschek
DOI:10.1038/s41589-021-00877-5
日期:2021.11
techniques that enable the quantitative interrogation of interactions between proteins and other biopolymers, or with their small-molecule ligands. Time-resolved Förster resonance energy transfer (TR-FRET) assay platforms offer high sensitivity and specificity. However, the paucity of accessible and biocompatible luminescent lanthanide complexes, which are essential reagents for TR-FRET-based approaches