FLAVONOIDS OF Inula salicina
N.M. Yuldasheva, B.J. Komilov, K.A. Eshbakova
S.Yu. Yunusov Institute of the Chemistry of Plant Substances Academy of sciences of the
Republic of Uzbekistan st. Mirzo-Ulugbek, 77, 100170 Tashkent
e-mail: doctorofacademi@gmail.com
The chemical components of flavonoids of the aerial parts of
Inula salicina
(
Asteraceae
family) growing in Uzbekistan were studied by column chromatographic
methods, and the following compounds (kaempferol, quercetin) were isolated [1].
The isolated compounds were determined using
1
H and
13
C NMR spectra, their
structure was compared with the samples by physicochemical and spectral parameters
(UV, IR and PMR).
Kaempferol
(
1
), C
15
H
10
O
6
, yellow crystals, mp 276–277°C (EtOAc).
1
H, NMR-
spectra (600 MHz, DMSO, δ, ppm, J/Hz): 6.20 (1H, d, J = 2.0, H-6), 6.46 (1H, d, J
=2.0, H-8), 6.98 (2H, d, J = 8.5, H-3′,5′), 8.10 (2H, d, J =8.5, H-2′,6′), 9.40 (1H, s, 4′-
OH), 10.9 (1H, s, 3-OH).
Quercetin
(
6
)
,
C
15
H
10
O
7
, mp 305–307 °C (EtOAc).
1
Н NMR (600 MHz, DMSO
δ,
ppm, J/Hz): 7.71 (1Н, d, J=1.8, H-2'), 7.53 (1Н, dd, J = 1.8; 9.0, Н- 6'), 6.89 (1Н, J =
9.0, H-5'), 6.40 (1Н, d, J=2.4, Н-8), 6.18 (1Н, d, J=2.4, Н-6), 12.48 (1Н, 5-ОН).
13
C
NMR (150 MHz, DMSO
δ
, ppm): 160.02(С-2), 135.68 (С-3), 176.79 (С-4), 160.68 (С-
5), 98.13 (С-6), 163.85 (С-7), 93.30 (С-8), 156.10 (С-9), 102.96 (С-10), 121.90 (С-1'),
115.55 (С-2'), 145.02 (С-3'), 146.76 (С-4'), 115.02 (С-5'), 119.92 (С-6').
Dostları ilə paylaş: |