Quercetin-3-O-[alpha-L-rhamnose-(1->2)-beta-D-glucopyranosyl]-5-O-beta-D-glucopyranoside

J Asian Nat Prod Res . 2010 Dec;12(12):1033-1037.

Two new flavone glycosides from the seeds of Impatiens balsamina L[Pubmed: 21128143]

Two new flavone glycosides were isolated from the seeds of Impatiens balsamina L. and their structures were determined as quercetin-3-O-[α-L-rhamnose-(1 → 2)-β-d-glucopyranosyl]-5-O-β-D-glucopyranoside (1), and quercetin-3-O-[(6'''-O-caffeoyl)-α-L-rhamnose-(1 → 2)-β-D-glucopyranosyl]-5-O-β-D-glucopyranoside (2) on the basis of various spectral and chemical studies.

Zhong Yao Cai . 2014 Mar;37(3):428-431.

[Chemical constituents of Trichosanthes kirilowii peels][Pubmed: 25174107]

Objective: To study the chemical constituents of the peels of Trichosanthes kirilowii. Methods: Many chromatographic techniques were used including repeated silica column chromatography, polyamide resin and semi-preparative high performance liquid chromatography. According to the physical and chemical properties and spectral analysis, the chemical structures of the compounds were determined. Results: Thirteen compounds were isolated and identified as quercetin-3-O-[alpha-L-rhamnose(1 --> 2)-beta-D-glucopyranosyl]-5-O-beta-D-glucopyranoside (1), quercetin-3-O-rutinoside (2), apigenin-7-O-beta-D-glucopyranoside (3), diosmetin-7-O-beta-D-glucopyranoside (4), luteolin (5), apigenin (6), diosmetin (7), methyl palmitate (8), methyl stearate (9), palmitic acid (10), beta-sitosterol (11), alpha-spin-asterol (12) and stigmasterol (13). Conclusion: Compounds 1 - 3, 5 - 7 are isolated from this plant for the first time.