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A Forward Chemical Screen Using Zebrafish Embryos with Novel 2‐Substituted 2H‐Chromene Derivatives
Author(s) -
Torregroza Ingrid,
Evans Todd,
Das Bhaskar C.
Publication year - 2009
Publication title -
chemical biology and drug design
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.59
H-Index - 77
eISSN - 1747-0285
pISSN - 1747-0277
DOI - 10.1111/j.1747-0285.2009.00782.x
Subject(s) - zebrafish , salicylaldehyde , transforming growth factor , smad , chemistry , microbiology and biotechnology , signal transduction , kinase , embryo , chemical genetics , small molecule , biology , biochemistry , stereochemistry , schiff base , gene
We synthesized 2‐substituted 2H‐chromene derivatives from salicylaldehyde using potassium vinylic borates in the presence of secondary amines. Our goal was to generate novel compounds that might modulate transforming growth factor‐β signaling, based on limited rational design. Potassium vinyl trifluoroborates react with salicylaldehydes at 80 °C in the presence of a secondary amine and produce 2‐substituted 2H‐chromene derivatives with a 70–90% yield. A small library of these compounds, predicted to potentially interact with transforming growth factor‐β receptors, was screened for bioactivity in living zebrafish embryos. We found that the related compounds differentially affect development, and demonstrate one compound that produces severe body axis alterations in early embryogenesis and at lower doses affects specifically cardiovascular development. This compound modulates specifically a Smad‐independent transforming growth factor‐β‐regulated mitogen‐activated protein kinase pathway, namely p‐SAPK/JNK. These compounds, as suggested by our biological assays, may prove useful to manipulate developmental programs and develop therapeutic tools.