Two new C-methyl flavanones from the rhizomes and frond bases of Matteuccia struthiopteris.
Two new C-methyl flavanones, (2S)-5,7-dihydroxy-6,8-dimethyl-4'-methoxydihydroflavone-7-O-(6″-O-acetyl)-β-d-glucopyranoside (1) and (2S)-5,7-dihydroxy-6,8-dimethyldihydroflavone-7-O-(6″-O-acetyl)-β-d-glucopyranoside (2), together with five known compounds, demethoxymatteucinol-7-O-β-d-glucopyranoside (3), matteucinol-7-O-β-d-glucopyranoside (4), 5,7-dihydroxy-6-methyl-4'-methoxydihydroflavone (5), methoxymatteucin (6), and thunberginol C (7), were first isolated from the EtOH extract of the rhizomes and frond bases of Matteuccia struthiopteris. The structures were established by spectral analyses, mainly HR-ESI-MS and 1D and 2D NMR experiments (COSY, HSQC, and HMBC).
a Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences , Beijing , 100700 , China.
Dong
D
Zhang
Shu-Bei
SB
Li
Lan
L
Yang
Yu-Jie
YJ
Li
Xiao-Xin
XX
Zhu
Eva
E
Kmoníčková
Zdeněk
Z
Zídek
Mei-Hong
MH
Fu
Jing
J
Fang
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D032491:Dryopteridaceae / Q000737:chemistry*; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D027343:Rhizome / Q000737:chemistry; D013237:Stereoisomerism
C586925:(2S)-5,7-dihydroxy-6,8-dimethyl-4'-methoxydihydroflavone-7-O-(6''-O-acetyl)-beta-D-glucopyranoside; C586926:(2S)-5,7-dihydroxy-6,8-dimethyldihydroflavone-7-O-(6''-O-acetyl)-beta-D-glucopyranoside; D004365:Drugs, Chinese Herbal; D044950:Flavanones; D005960:Glucosides