3) chlorogenic acid butyl ester 氯原酸正丁酯4) trichloromethyl phenyl carbinyl acetate 乙酸三氯甲基苯原酯 1. The physical and chemical properties and aroma characteristic of trichloromethyl phenyl carbinyl acetate are outlined. 概述了乙酸三氯甲基苯原酯的理化性质和香气特征,重点介绍了用苯甲醛和...
however, comes from 1844. In that year Rochleder noticed that caffeine in green coffee beans could combine with an acid that could be precipitated with lead salts. The free acid, generated
Highly Efficient Synthesis of Chlorogenic Acid Oleyl Alcohol Ester under Non-Catalytic and Solvent-Free Conditions As a natural polyphenolic compound, chlorogenic acid (CGA) has attracted increasing attention for its various biological activities, such as antioxidant, l... C Sun,H Liu,Y Chen,... ...
The medium chain fatty acid vinyl ester is a more suitable acyl donor. When vinyl octanoate was used as the acyl donor, the conversion rate of chlorogenic acid reached 46.0% after 2 days of reaction. However, when vinyl laurate was used as the acyl donor, the product was only substituted ...
caffeic acid esteramino compoundbenzacridine derivativeA marked greening observed in some foods such as sweet potato, burdock, and others during food processing was shown to be due to green pigment formation by the condensation reaction of two molecules of chlorogenic acid or caffeic acid ester with...
FIG. 3: ABSORPTION SPECTRA OF PHOTO-OXIDATION OF CHLOROGENIC ACID IN THE PRESENCE OF TERT-BUTYL HYDROPEROXIDE AND β-CAROTENE AT DIFFERENT IRRADIATION TIMES; [chlorogenic acid] = 2 ´ 10-5 mol dm-3, [t-...
1) chlorogenic acid ethyl ester 氯原酸乙酯2) chloroacetates 氯乙酸酯 1. A series of chloroacetates were synthesized with TiSiW 12 O 40 /TiO 2 as catalyst from ethyl alcohol, propyl alcohol, n butyl alcohol, n amyl alcohol and iso amyl alcohol respectively with chloroacetic acid, and the ...
The medium chain fatty acid vinyl ester is a more suitable acyl donor. When vinyl octanoate was used as the acyl donor, the conversion rate of chlorogenic acid reached 46.0% after 2 days of reaction. However, when vinyl laurate was used as the acyl donor, the product was only substituted ...
Scheme 3. Synthesis of cyclohexyl ester analogues of CGA: Reagents and conditions; (a) DMAP, pyridine, acid chloride, rt; (b) (i) SOCl2, toluene, 100 °C, N2; (ii) DMAP, cyclohexanol, CH2Cl2, rt, N2, 12–58%; (c) H2SO4, cyclohexanol, reflux, 62%; (d) isobutyl bromide, K2CO...