Hystrixarin (1) was obtained as a colourless viscous oil. Its
molecular formula was determined as C19H22O6 by HRESIMS measurement
for C19H22O6Na at m/z 369.1308. The IR spectrum
showed absorption bands at 3452, 1738 and 1606 cm1, indicating
presence of a hydroxyl group, a carbonyl group and an aromatic
ring system, respectively. The UV spectrum displayed absorption
bands at 218, 245, 256 and 325 nm, indicating presence of a 7-oxygenated
coumarin moiety