1,3-Dihydroxy-2-methoxymethyl-9,10-anthraquinone from Rennellia elliptica Korth.
نویسندگان
چکیده
The title compound, C(16)H(12)O(5), common name: lucidin ω-methyl ether, exists as a planar mol-ecule (r.m.s. deviation = 0.04 Å). Within the mol-ecule, the 1-hydr-oxy group forms a hydrogen bond to the adjacent carbonyl O atom, and the 3-hydr-oxy group forms a hydrogen bond to the adjacent meth-oxy O atom. The meth-oxy O atom is disordered over two positions of equal occupancy.
منابع مشابه
Anthraquinones with antiplasmodial activity from the roots of Rennellia elliptica Korth. (Rubiaceae).
Dichloromethane root extract of Rennellia elliptica Korth. showed strong inhibition of Plasmodium falciparum growth in vitro with an IC₅₀ value of 4.04 µg/mL. A phytochemical study of the dichloromethane root extract has led to the isolation and characterization of a new anthraquinone, 1,2-dimethoxy-6-methyl-9,10-anthraquinone (1), and ten known anthraquinones: 1-hydroxy-2-methoxy-6-methyl-9,10...
متن کامل1-Hydroxy-2-methoxy-6-methyl-9,10-anthraquinone from Rennellia elliptica Korth.
The title compound, C(16)H(12)O(4), exists as planar molecules in the solid state (r.m.s. deviation of 0.02 Å in one mol-ecule and 0.07 Å in the second independent mol-ecule comprising the asymmetric unit). In each mol-ecule, the 1-hydr-oxy group forms an intra-molecular hydrogen bond to the adjacent carbonyl O atom.
متن کامل6-[3-(2,4-Dimethylanilino)-2-hydroxypropoxy]-1,8-dihydroxy-3-methyl-9,10-dihydroanthracene-9,10-dione
In the title compound, C(26)H(25)NO(6), the anthraquinone ring system forms a dihedral angle of 15.5 (1)° with the benzene ring of the dimethyl-aniline group. Intra-molecular O-H⋯O hydrogen bonding is observed between the carbonyl and two hydroxyl groups. The mol-ecules are linked into a ribbon-like structure along the [100] direction by O-H⋯N and C-H⋯O hydrogen bonds. The crystal used was twin...
متن کاملIridoids and anthraquinones from the Malaysian medicinal plant, Saprosma scortechinii (Rubiaceae).
A further investigation of the leaves and stems of Saprosma scortechinii afforded 13 compounds, of which 10 are new compounds. These were elucidated as the bis-iridoid glucosides, saprosmosides G (1) and H (2), the iridoid glucoside, 6-O-epi-acetylscandoside (3), and the anthraquinones, 1-methoxy-3-hydroxy-2-carbomethoxy-9,10-anthraquinone (4), 1-methoxy-3-hydroxy-2-carbomethoxy-9,10-anthraquin...
متن کاملIsolation and photoisomerization of a new anthraquinone from hairy root cultures of Sesamum indicum.
An unstable anthraquinone was isolated from hairy root cultures of Sesamum indicum after preventing light throughout all experimental procedures. The structure of the (Z)-isomer of a previously isolated anthraquinone was determined to be 2-[(Z)-4-methylpenta-1,3-dien-1-yl]anthraquinone by spectroscopic methods. This compound was readily isomerized to the known (E)-isomer under light.
متن کامل