Masaki Shinoda

A convenient synthesis of β-alkynylpropionic acids from β-propiolactones. Synthesis of 4,4,5,5-tetradehydro-9(O)-methano-Δ6(9α)-PGI1

A new prostacyclin analog, 4,4,5,5-tetradehydro-9(0)-methano-gD6(9α)-PGI, has been synthesized by utilizing the regiocontrolled cleavage of the β-propiolactone uith the dialkylaluminum acetylide.

5-Aryl-imidazolin-2-ones as a scaffold for potent antioxidant and memory-improving activity

A series of 5-phenyl-substituted-N-alkyl-imidazolin-2-ones with potent radical-scavenging activity and lipid peroxidation inhibitory activity was synthesized. Many of the compounds showed memory-improving effect in animal models independent of the inhibitory activity on lipid peroxidation.

Synthesis of the metabolites of a free radical scavenger edaravone (MCI-186, Radicut™ )

Abstract Two metabolites of a free radical scavenger, edaravone, were synthesized. Edaravone glucuronate was synthesized by glycosylation of a glucuronic acid precursor using silver (I) trifluoromethane-sulfonate with edaravone. Edaravone sulfate was synthesized by sulfonylation of edaravone using a sulfur trioxide-pyridine complex. The two synthesized metabolites were identical to isolated metabolites. X-ray analysis identified edaravone glucuronate as β-O-glucuronate, although there were three possible edaravone glucuronate tautomers.