Two new phenolic compounds were isolated from whole plant ofArtemisia sphaerocephala. The structures were elucidated on the basis of spectroscopic methods as 4-（1-hydroxylethyl）-phenol-l-O-β-D-glucopyranoside and 4...Two new phenolic compounds were isolated from whole plant ofArtemisia sphaerocephala. The structures were elucidated on the basis of spectroscopic methods as 4-（1-hydroxylethyl）-phenol-l-O-β-D-glucopyranoside and 4-O-acetophenone-β-D-gluco- pyranosyl-（1-3）-β-D-glucopyranoside.展开更多
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 crys...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）, V = 2743.4（11）3, 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.展开更多
文摘Two new phenolic compounds were isolated from whole plant ofArtemisia sphaerocephala. The structures were elucidated on the basis of spectroscopic methods as 4-（1-hydroxylethyl）-phenol-l-O-β-D-glucopyranoside and 4-O-acetophenone-β-D-gluco- pyranosyl-（1-3）-β-D-glucopyranoside.
基金supported by the Science and Technology Agency of Henan Province(112102310305)the International Cooperation Program of Henan Province(No.092102310282)
文摘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）, V = 2743.4（11）3, 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.
