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[Chemical constituents of Viola tianshanica].

Jiandong Yu, Zhong Dai, Ruichao Lin

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Abstract

OBJECTIVE: To study the chemical constituents of Viola tianshanica. METHOD: Compounds were isolated by silica column, pharmadex LH-20 column and polyamide column, and their structures were elucidated by UV, IR, ESI-MS and NMR. RESULT: Six compounds were isolated and identified as daucosterol (1), kaempferol-7-O-beta-D-glucopyranoside (2), kaempferol- 3-O-beta-D-glucopyranoside (3), isorhamnetin-3-O-beta-glucoside (4), kaempferol (5) and quercetin (6). CONCLUSION: Compounds 2-5 were isolated from this plant for the first time.

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What this paper is about

OBJECTIVE: To study the chemical constituents of Viola tianshanica. METHOD: Compounds were isolated by silica column, pharmadex LH-20 column and polyamide column, and their structures were elucidated by UV, IR, ESI-MS and NMR. RESULT: Six compounds were isolated and identified as daucosterol (1), kaempferol-7-O-beta-D-glucopyranoside (2), kaempferol- 3-O-beta-D-glucopyranoside (3), isorhamnetin-3-O-beta-glucoside (4), kaempferol (5) and quercetin (6). CONCLUSION: Compounds 2-5 were isolated from this plant for the first time.

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Available abstract

OBJECTIVE: To study the chemical constituents of Viola tianshanica. METHOD: Compounds were isolated by silica column, pharmadex LH-20 column and polyamide column, and their structures were elucidated by UV, IR, ESI-MS and NMR. RESULT: Six compounds were isolated and identified as daucosterol (1), kaempferol-7-O-beta-D-glucopyranoside (2), kaempferol- 3-O-beta-D-glucopyranoside (3), isorhamnetin-3-O-beta-glucoside (4), kaempferol (5) and quercetin (6). CONCLUSION: Compounds 2-5 were isolated from this plant for the first time.

Key concepts: Kaempferol, Daucosterol, Isorhamnetin, Chemistry, Column chromatography, Chromatography, Silica gel, Quercetin

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