Chemical investigation of the n-BuOH-soluble fraction of the EtOH extract of the aerial part of Curcuma longa led to the isolation of 11 flavonol glycosides and one dihydroflavonol glucoside (1) via chromatography over Sephadex LH-20 and Lobar RP-18 columns. Although they are known, the 1H and 13C NMR data recorded in CD3OD rather than the common DMSO-d6 are doubly checked via extensive 2D NMR spectroscopic analyses, leading to some revisions of the reported data, especially for the glycon part.
HatcherH, PlanalpR, ChoJ, TortiFM, TortiSV. (2008) Curcumin: From ancient medicine to current clinical trials. Cellular and Molecular Life Sciences, 65, 1631–1652.
2.
JainV, PrasadV, SinghS, PalR. (2007) HPTLC method for the quantitative determination of ar-turmerone and turmerone in lipid soluble fraction from Curcuma longa. Natural Product Communications, 2, 927–932.
3.
KimJA, SonJK, ChangHW, JahngY, KimYS, NaMK, LeeSH. (2008) Inhibition of mushroom tyrosinase and melanogenesis B16 mouse melanoma cells by components isolated from Curcuma longa. Natural Product Communications, 3, 1655–1658.
4.
PistelliL, BertoliA, GelliF, BediniL, RuffoniB, PistelliL. (2012) Production of curcuminoids in different in vitro organs of Curcuma longa. Natural Product Communications, 7, 1037–1042.
5.
JiangJ, ZhangH, LiZ, ZhangX, SuX, LiY, QiaoB, YuanY. (2013) HPLC-MS and GC-MS analyses combined with orthogonal partial least squares to identify cytotoxic constituents from turmeric (Curcuma longa L.). Natural Product Communications, 8, 1129–1134.
6.
BehuraS, SahooS, SrivastavaVK. (2002) Major constituents in leaf essential oils of Curcuma longa L. and Curcuma aromatica Salisb. Current Science, 83, 1312–1313.
7.
GargSN, MengiN, PatraNK, CharlesR, KumarS. (2002) Chemical examination of the leaf essential oil of Curcuma longa L. from the North Indian plains. Flavour and Fragrance Journal, 17, 103–104.
8.
PandeC, ChanotiyaCS. (2006) Constituents of the leaf oil of Curcuma longa L. from Uttaranchal. Journal of Essential Oil Research, 18, 166–167.
9.
NorFM, MohamedS, IdrisNA, IsmailR. (2009) Antioxidative properties of Curcuma longa leaf extract in accelerated oxidation and deep frying studies. Journal of the American Oil Chemists Society, 86, 141–147.
10.
PanH, LundgrenLN. (1996) Phenolics from inner bark of Pinus sylvestris. Phytochemistry, 42, 1185–1189.
11.
JinH, ChenG, LiX, ShenY, YanS, ZhangL, YangM, ZhangW. (2009) Flavonoids from Rhododendron decorum. Chemistry of Natural Compounds, 45, 85–86.
12.
NawwarMAM, El-MousallamyAMD, BarakatHH. (1989) Quercetin 3-glycosides from the leaves of Solanum nigrum. Phytochemistry, 28, 1755–1757.
13.
RastrelliL, SaturninoP, SchettinoO, DiniA. (1995) Studies on the constituents of Chenopodium pallidicaule (Cañihua) seeds. Isolation and characterization of two new flavonol glycosides. Journal of Agricultural and Food Chemistry, 43, 2020–2024.
14.
FlaminiG, BulleriC, MorelliI, ManuntaA. (2000) A new flavonoid glycoside from Centaurea horrida. Journal of Natural Products, 63, 662–663.
15.
YangNY, TaoWW, DuanJA. (2010) Antithrombotic flavonoids from the faeces of Trogopterus xanthipes. Natural Product Research, 24, 1843–1849.
16.
FurusawaM, TanakaT, ItoT, NakayaK, IliyaI, OhyamaM, IinumaM, MurataH, InatomiY, InadaA, NakanishiT, MatsushitaS, KubotaY, SawaR, TakahashiY. (2005) Flavonol glycosides in leaves of two Diospyros species. Chemical & Pharmaceutical Bulletin, 53, 591–593.
17.
HufnagelJC, HofmannT. (2008) Orosensory-directed identification of astringent mouthfeel and bitter-tasting compounds in red wine. Journal of Agricultural and Food Chemistry, 56, 1376–1386.
18.
LeiteJPV, RastrelliL, RomussiG, OliveiraAB, VilegasJHY, VilegasW, PizzaC. (2001) Isolation and HPLC quantitative analysis of flavonoid glycosides from Brazilian beverages (Maytenus ilicifolia and M. aquifolium). Journal of Agricultural and Food Chemistry, 49, 3796–3801
19.
YasukawaK, TakidoM. (1987) A flavonol glycoside from Lysimachia mauritiana. Phytochemistry, 26, 1224–1226.
20.
RaoKV, DamuAG, JayaprakasamB, GunasekarD. (1999) Flavonol glycosides from Cassia hirsuta. Journal of Natural Products, 62, 305–306.
21.
WangPH, LeeSS. (1999) Polar chemical constituents from Phoebe formosana. Journal of the Chinese Chemical Society-Taipei, 46, 215–219.
22.
GaffieldW. (1970) Circular dichroism, optical rotatory dispersion and absolute configuration of flavanones, 3-hydroxyflavanones and their glycosides: Determination of aglycone chirality in flavanone glycosides. Tetrahedron, 26, 4093–4108.
23.
SladeD, FerreiraD, MaraisJPJ. (2005) Circular dichroism, a powerful tool for the assessment of absolute configuration of flavonoids. Phytochemistry, 66, 2177–2215.
