369384-38-3

Upstream product

• 16814-88-3 methyl (2R)-2-methoxy-3-(triphenylmethoxy)propanoate 
• 112185-26-9 S-tert-butyl (E)-3-oxo-5-phenyl-4-pentenethioate 
• 140-10-3 (E)-3-phenylacrylic acid 
• 76-83-5 trityl chloride 

Downstream Products

• 369384-39-4 (R)-3-[(E)-3-phenyl-2-propenoyl]-5-triphenylmethyloxymethyltetronic acid 

Relevant academic research and scientific papers

Synthesis of a tetronic acid library focused on inhibitors of tyrosine and dual-specificity protein phosphatases and its evaluation regarding VHR and Cdc25B inhibition

Selective inhibitors of protein tyrosine phosphatases (PTPs) and dual-specificity phosphatases (DSPs) are expected to be useful tools for clarifying the biological functions of the PTPs themselves and also to be candidates for novel therapeutics. We planned a library approach for the identification of PTP/DSP inhibitors in which 3-acyltetronic acid is used as a "core" phosphate mimic. A series of novel tetronic acid derivatives were synthesized and evaluated as inhibitors of the dual-specificity protein phosphatases VHR and cdc25B. Several compounds are found to be potent inhibitors of cdc25B, which is a key enzyme for cell-cycle progression. The promising results described herein strongly indicated that this tetronic acid library is potent as a library focused on the PTP/DSP-selective inhibitor.

Asymmetric synthesis of RK-682 and its analogs, and evaluation of their protein phosphatase inhibitory activities

We report an asymmetric synthesis of a potent tyrosine phosphatase inhibitor, RK-682 and its analogs. The absolute stereochemistry of RK-682 was determined to be (R). The inhibitory activities of RK-682 and its analogs, (R)-1a, (S)-1a, (R)-1b and (R)-1c toward various protein phosphatases (VHR, cdc25A, cdc25B, and PPI) are also reported.