COMPOUNDS

摘要

Flavonoid-type compounds of the Formula (II); in which R<SUP>1</SUP> is alkyl C<SUB>2</SUB> to C<SUB>20</SUB>, R<SUP>2</SUP>, R<SUP>3</SUP>, R<SUP>4</SUP> and R<SUP>5</SUP> are any one or more of hydrogen, alkyl, alkenyl, alkynyl, phenyl or benzyl, especially 7-decyl-3-hydroxy-2- (3, 4, 5- trihydroxyphenyl) -4H-1-benzopyran-4-one or 7-ethyl-3- hydroxy-2- (3, 4, 5-trihydroxyphenyl) -4H-1-benzopyran-4-one provide fluorescent probes and antioxidants, and are useful in discriminating healthy and stressed cells.