Compound 4(S)-4,5-dihydroxy-alpha-tetralone 5-O-beta-D-glucopyranose (1->6)-beta-D-glucopyranoside, and preparation method and application thereof
A technology of glucopyranoside and glucopyranose, which is applied to the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve the problems of wasting medicinal resources and polluting the environment, and achieve the prevention of shortages and the rational use of resources , expanding the effect of drug sources
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Embodiment 2
[0032] Compound Identification:
Embodiment 1
[0033] The compound obtained in Example 1 is a yellow amorphous powder (MeOH). UV spectrum (MeOH) exhibits maximum absorption at 254 nm. Positive HR-ESI-MS spectra, such as figure 2 As shown, [M+Na] can be seen at m / z525.1657 + Ion peak, indicating that the molecular weight of the compound is 502. combine 1 H-NMR, 13 C-NMR and DEPT spectra speculate that its molecular formula is C 22 h 30 o 13 , calculate its degree of unsaturation to be 8.
[0034] in the compound 1 H-NMR (CD 3 OD,400MHz) spectrum, such as image 3 As shown, the low field area δ7.58 (1H, dd, J=8.0,0.9Hz), 7.45 (1H, t, J=8.0Hz) and 7.66 (1H, dd, J=8.0,0.9Hz) is a group Aromatic proton signals of the ABX coupled system. In the high field region δ2.26 (2H, m), 3.00 (1H, ddd, J=17.0, 12.4, 5.6Hz) and 2.51 (1H, brd, J=17.0Hz) are two methylenes on the naphthalene ring Primary proton signal. At δ5.33brs is a methine proton signal. At δ4.98 (1H, d, J=7.5Hz) and 4.37 (1H, d, J=7.6Hz), there are two si...
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