Two new diacetylene glycosides: bhutkesoside A and B from the roots of <i>Ligusticopsis wallichiana</i>

<p>Two new diacetylene glycosides: bhutkesoside A (<b>1</b>) and B (<b>2</b>), along with 10 known compounds, i.e. falcarindiol (<b>3</b>), chlorogenic acid (<b>4</b>), 5-<i>O</i>-<i>p</i>-coumaroyl-quinic acid (<b>5</b>), 3,5-di-<i>O</i>-caffeoyl-quinic acid (<b>6</b>), 4-hydroxy-7-methoxy-phenylethanol (<b>7</b>), ferulic acid (<b>8</b>), dehydrodiconiferyl alcohol-4-<i>O</i>-<i>β</i>-d-glucopyranoside (<b>9</b>), 5,7-dihydroxy-2-methylchromone-7-<i>O</i>-rutinoside (<b>10</b>), schumanniofioside B (<b>11</b>) and marmesinin (<b>12</b>) were isolated from the roots of <i>Ligusticopsis wallichiana</i> (DC) Pimenov & Kljuykov (Apiaceae), commonly known as ‘Bhutkesh’ in Nepal. The structures were determined on the basis of spectroscopic data. Compounds <b>4</b> and <b>6</b> showed potent antioxidant activity on DPPH free radical scavenging assay.