Chemical constituents from rhizome of Smilax davidiana / 中草药

Objective: To study on the chemical constituents from the rhizome of Smilax davidiana. Methods: The compounds were separated and purified by sephadex LH-20 column chromatography and high performance liquid chromatography. Their structures were identified by spectroscopic analysis and comparison with literatures. Results: Twenty compounds were isolated and identified as aromadendrin7-O-β-D-glucopyranoside (1), dalbergin (2), 3,5,7,4′-tetrahydroxyflavanone-7-O-β-D-glucopyranoside (3), kaempferol-7-O-β-D-glucopyranoside (4), quercetin-7-O-β-D-glucopyranoside (5), quercetin-3-O-β-L-rhamnopyranoside (6), 4,6- dihydroxy-2-O-(β-D-glucopyranosyl)-acetophenone (7), 3,5-dihydroxy-4-O-(β-D-glucopyranosyl) acetophenone (8), 2,4,6- trihydroxy-acetophenone-4-O-β-D-glucopyranoside (9), 2,4,6-trihydroxylacetophenone-2,4-di-O-β-D-glucopyranoside (10), epicatechin (11), latifolin (12), 3′-O-(E-4-coumaroyl)-quinic acid (13), 5-O-caffeoylquinic acid butyl ester (14), 5,5′- dimethoxylariciresinol 4′-O-β-D-glucopyranoside (15), 1-cerotoylglycerol (16), cinchonain Ib (17), adenosine (18), resveratrol (19), and 3,4,5-trimethoxyphenyl-1-β-D-glucopyranoside (20). Conclusion: Compounds 4—9, and 12—16 are isolated from Smilax genus for the first time, and compounds 1—3, 17, and 18 are from S. davidiana for the first time.

Chemical constituents from Rhodiola sachalinensis / 中草药

Objective: To investigate the chemical constituents from the roots and rhizomes of Rhodiola sachalinensis. Methods: The chemical constituents were isolated by repeated silica gel chromatography, medium pressure column chromatography, and semi-preparative liquid chromatography, and their structures were elucidated by chemical properties and spectroscopic analyses. Results: Eighteen compounds were isolated and identified to be gallic acid (1), p-hydroxybenzoic acid (2), salidroside (3), benzyl-O-β-D-glucopyranodide (4), phenylethyl-8-O-β-D-glucopyranodide (5), cinnamyl-β-D-glucopyranoside (6), sachalinol (7), quercetin (8), quercetin-3-O-β-D-glucopyranoside (9), kaempferol (10), kaemferol-7-O-α-L-rhamnopyranoside (11), kaempferol- 7-O-β-D-glucopyranoside (12), kaemnpferol-3-O-α-L-rhamnoside (13), kaempferol-3-O-β-D-glucopyranoside-7-O-α-L-rhamnoside (14), tricin (15), tamarixetin (16), herbacetin-7-O-α-L-rhamnoside (17), and herbacetin-3-O-β-D-glucopyranoside-7-O-α-L- rhamnoside (18). Conclusion: Compounds 9, 12, and 16 are obtained from the plants in Rhodiola L. for the first time. Compounds 2, 7, 8, 14, and 18 are obtained from this plant for the first time.