Citation:
WANG Yong, QING Wei-Xia, LI Lin-Xi, ZHAO Dong-Bao, LIU Xiu-Hua. Isolation and Identification of 5,3',4'-Trihydroxy-7-methoxyflavanone from Artemisia sphaerocephala Kraschen[J]. Chinese Journal of Structural Chemistry,
2014, 33(2): 199-203.
Isolation and Identification of 5,3',4'-Trihydroxy-7-methoxyflavanone from Artemisia sphaerocephala Kraschen
摘要:
5,3',4'-Trihydroxy-7-methoxyflavanone was isolated from Artemisia sphaeroce-phala Kraschen and characterized by 1H-NMR, 13C-NMR, EI-MS, IR, UV spectra, and single-crystal X-ray diffraction. The title compound crystallizes in orhtorhombic space group Pca21, with a=14.393(3), b=5.1629(12), c=36.919(9) Å, V=2743.4(11) Å3, Z=8, Mr=302.27, Dc=1.464 g/cm3, F(000)=1264, μ=0.113 mm-1,S=1.015, (Δ/σ)max=0.000, the final R=0.0757 and wR=0.1809. Structural analysis indicates the title compound consists of two 5,3',4'-trihydroxy-7-methoxyflavanone enantiomers in a well-defined arrangement within the crystal lattice, which constructs a three-dimensional network by means of multiple O-H…O hydrogen bonds.
English
Isolation and Identification of 5,3',4'-Trihydroxy-7-methoxyflavanone from Artemisia sphaerocephala Kraschen
Abstract:
5,3',4'-Trihydroxy-7-methoxyflavanone was isolated from Artemisia sphaeroce-phala Kraschen and characterized by 1H-NMR, 13C-NMR, EI-MS, IR, UV spectra, and single-crystal X-ray diffraction. The title compound crystallizes in orhtorhombic space group Pca21, with a=14.393(3), b=5.1629(12), c=36.919(9) Å, V=2743.4(11) Å3, Z=8, Mr=302.27, Dc=1.464 g/cm3, F(000)=1264, μ=0.113 mm-1,S=1.015, (Δ/σ)max=0.000, the final R=0.0757 and wR=0.1809. Structural analysis indicates the title compound consists of two 5,3',4'-trihydroxy-7-methoxyflavanone enantiomers in a well-defined arrangement within the crystal lattice, which constructs a three-dimensional network by means of multiple O-H…O hydrogen bonds.
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