Chemical constituents from stems of Dysoxylum laxiracemosum / 中国中药杂志

Twelve compounds were separated from stems of Dysoxylum laxiracemosum and their structures were identified by spectrum analysis as shoreic acid (1), cabraleahydroxylactone (2), cabralealactone (3), cinchonain (5), catechin (6), scopoletin (7), vanillic acid (8), p-hydroxybenzoic acid (9), docosanol (10), beta-sitosterol (11), daucosterol (12). Of them, compounds 1-6,8-12 were separated from this plant for the first time, and compounds 4-6 were reported from this plant genus for the first time.

Chemical constituents from twigs of Garcinia xipshuanbannaensis / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents of the twigs of Garcinia xipshuanbannaensis.</p><p><b>METHOD</b>The compounds were isolated by column chromatography with silica gel, RP-18 and Sephadex LH-20, and their structures were elucidated by spectroscopic analysis.</p><p><b>RESULT</b>Fifteen compounds were obtained and identified, which were bannaxanthone E (1), xanthochymol (2), isoxanthochymol (3), cycloxanthochymol (4), osajaxanthone (5), gentisein (6), mangostinone (7), kaempferol (8), quercetin (9), vitexin (10), 2"-O-acetylvitexin (11), 3-acetoxyoleanolic acid (12), (-)-epicatechin (13), beta-sitosterol (14) and daucosterol (15), respectively.</p><p><b>CONCLUSION</b>Compounds 4-9 and 11-13 were isolated from the plant and compounds 11-13 were obtained from the genus Garcinia for the first time.</p>