“…texana upon repeated CC over Si gel and crystallization, afforded seven pure compounds. By means of spectroscopic analysis and comparison with published data or with authentic specimens, six known compounds were identifed: amarolide ( 2 ), chaparrinone, − chaparrin, , glaucarubolone, , holacanthone, ,, and 15- O -β- d -glucopyranosyl glaucarubol . Glaucarubolone, chaparrinone, and chaparrin were previously isolated from the stem bark of this plant collected in Mexico .…”