BMC Chemistry

Table 2 C-glycosyl flavones structures based on the aglycones of apigenin and chrysoeriol from Flickingeria fimbriata

From: Identification of C-glycosyl flavones by high performance liquid chromatography electrospray ionization mass spectrometry and quantification of five main C-glycosyl flavones in Flickingeria fimbriata

	No.	R1	R2	R3	No.	R1	R2	R3
	1	Glu	Glu	H	16	Glu	Glu-b²	H
	2	Glu	Glu	OCH3	17	Glu-b²	Xyl	H
	3	Xyl	Glu	H	18	Ara	Glu-a²	H
	4	Glu	Ara	H	19	Glu-c¹	Glu	H
	5	Glu	Xyl	H	20	Ara	Glu-b²	H
	6	Xyl	Glu	OCH3	21	Glu-c¹	Xyl	H
	7	Glu	Ara	OCH3	22	Glu	Glu-c²	H
	8	Ara	Glu	OCH3	23	Glu	Glu-d²	H
	9	Glu	Xyl	H	24	Glu-d¹	Ara	H
	10	Glu	Xyl	OCH3	25	Xyl	Glu-c²	OCH3
	11	H	Glu-a¹	H	26	Xyl	Glu-c²	H
	12	Glu-a¹	H	H	27	Xyl	Glu-d²	OCH3
	13	Glu-a¹	Xyl	H	28	Xyl	Glu-d²	H
	14	Glu-b¹	Xyl	H	29	Ara	Glu-c²	H
	15	Glu-d¹	Xyl	H	30	Ara	Glu-d²	H

a: ρ-coumaroyl; b: feruloyl; c: 3,4-dimethoxycinnamoyl; d: 3,4,5-trimethoxycinnamoyl
¹The position of acylation is set to 2″-O in sugar
²The position of acylation is set to 6″-O in sugar

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ISSN: 2661-801X

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