Journal of Chemical Crystallography p. 21 - 25 (2008)
Update date:2022-08-17
Topics:
Kou, Li-Qun
Cheng, Xin-Li
Zhang, Zun-Ting
Two apigenin alkylation derivatives, 4′,7-dimethoxyl-5-hydroxyflavone (I) and 4′,7-diethoxyl-5-hydroxyflavone (II), have been synthesized and their crystal structures were determined by 1H NMR and single crystal X-ray diffraction study. (I) is triclinic, space group P-1 with a = 7.120(5) A, b = 7.297(5) A, c = 13.559(10) A, α = 89.313(12)°, β = 86.298(12)°, γ = 83.999(13)° and Z = 2. (II) is monoclinic, space group P 21 /c with a = 16. 309(4) A, b = 7.303(2) A, c = 15.185(4) A, α = 90.00°, β = 115.70(2)°, γ = 90.00° and Z = 4. They have the same flavone skeleton which is composed of a benzopyranone moiety and a phenyl moiety. Molecules of (I) are linked into a two-dimensional network by a combination of C-H...O hydrogen bond and π-π stacking interactions. (II) shows some discrepancies with (I) and the molecules are linked into a column by π-π stacking interaction.
View MoreContact:+86-570-4336358
Address:No.87 Building,Tianqian,Sidu Town
Shuanghe Bio-Technology Limited(expird)
Contact:+86-571-61710758,18968016640
Address:Jinqiao north road 916# Fuyang
Contact:86-27-84888681
Address:Wuhan economic & technology development zone
Suzhou Kangrun Pharmaceutical, Inc
Contact:86-512-63912376,63913329
Address:Building 2, No. 2358 ,Chang'an Rd, Wujiang Economic Development Zone Pioneering park, china
shanghai tuomiao chemicial co.,ltd.
website:https://www.tuomiaochem.com/
Contact:021 - 59853336
Address:shanghai
Doi:10.1021/jo00271a038
(1989)Doi:10.1111/j.1745-7939.2002.tb01615.x
(1933)Doi:10.1021/acs.orglett.8b02167
(2018)Doi:10.1080/00498254.2021.1930281
(2021)Doi:10.1021/ol9016645
(2009)Doi:10.1039/b921334a
(2010)