Abstract:
In the present study, two new acetylene conjugate compounds, dibutyl (2
Z, 6
Z)-octa-2, 6-dien-4-yne dioate (
1 ), and dibutyl (2
E, 6
E)- octa-2, 6-dien-4-yne dioate (
2 ), were isolated from the dry stem leaves of
Viscum album, along with nine known compounds (
3 -
11 ). Their structures were confirmed on the basis of spectroscopic data. Compounds
1 and
8 showed antioxidant activity against xanthine oxidase (XOD) and 1, 1-diphenyl-2-picrylhydrazyl radical 2, 2-diphenyl-1-(2, 4, 6-trinitrophenyl) hydroxyl (DPPH), with the IC
50 of 1.22 and 1.33 μmol·L
-1, and the SC
50 of 4.34 and 8.22 μmol·L
-1, respectively.
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