Methyl plum

Phlonzm is obtained from the root bark of apple pear cherry and plum trees It has the molecular formula C21H24O10 and yields a compound A and D glucose on hydrolysis in the pres ence of emulsin When phlorizin is treated with excess methyl iodide in the presence of potassium carbonate and then subjected to acid catalyzed hydrolysis a compound B is obtained Deduce the structure of phlorizin from this information... 

Approximately 75 volatile compounds have been identified in juices prepared from plums Prunus domestica) [35]. Lactones from Ce to C12 are the major class of compound in plums [78]. The distribution of plum lactones differs from that found in peaches in that the C12 y-lactones are found in higher concentrations than the corresponding Cio y-lactones and d-decalactone (Fig. 7.2) [78]. GC sniffing has uncovered benzaldehyde, linalool, ethyl nonanoate, methyl cin-namate, y-decalactone and d-decalactone as volatile compounds contributing to plum juice aroma (Table 7.2, Figs. 7.1, 7.2, 7.4, 7.5) [35]. 

O-Methyl-L-fucose occurs as a constituent of plum-leaf polysaccharides,23 linseed mucilage,24 soybean polysaccharides,25 and gum tragacanth.26... 

Benzoic and salicylic acids. Two of the simplest plant acids arising from fraus-cinnamate are benzoic acid, accumulated in plums and cranberries, and salicylic acid, present in all green plants and accumulated as methyl esters or glycosides in some plants, e.g., those of the willow family. Salicylic acid is made by hydroxylation of benzoic acid,177 which can be formed from frans-cinnamate by P oxidation as depicted in Fig. 25-8, but it may also arise from isochoris-mate as shown in Fig. 25-2.178 Salicylic acid plays a central role in resistance of plants to a variety of... 

Chemical Name 0,0-dimethyl S -methylcarbamoyl-methyl phosphorodithioate 0,0-dimethyl SHA-monomethy car-bamylmethyl dithiophosphate 2-dimethoxyphosphinothioylthio-A-methylacetamide Uses systemic and contact insecticide to control thrips and red spider mites on many agricultural crops, sawflies on apples and plums, also wheat bulb and olive flies. 

Additional oxidative coupling processes among the various methylated derivatives of laudanosoline yield many other families of bases, including the pavine argemonine (88) from Argemone mexicana E berberine (89) from Hydrastis canadensis E which, despite its toxicity, has been used as an antimalarial protopine (90) and chelidonine (91) from Chelidonium majus E rhoeadine (92) and the cephalotaxus ester harringtonine (93) from Japanese plum yews ( Cephalotaxus spp.), which is a compound of some significance because it possesses potent antileukemic activity (see Fig. 3). 

Some drinks naturally contain significant amounts of methyl alcohol, especially fruit brandies made from plums or apricots, for example (like slivovic, which is produced in the Balkans). The methyl alcohol content may account for some of the unpleasant effects of consuming too much of these drinks ... 

CIC The green note is represented by (Z)-3-hexenol, (E)-2-hexenol, (E)-2-hexenal. 4-Decanolide contributes to the heavy, lactony character. The heavy floral note is the result of a balanced mixture of linalool, 2-phenylethanol, benzyl acetate. The spicy background, mainly from cooked plums, results from cinnamaldehyde, eugenol, methyl cinnamate with some stone notes of benzaldehyde. The fruity, fatty body is imparted by (Z)-3-hexenyl-2-methyl butyrate and ethyl nonanoate. 

Apples, plums and peaches contain a highly methylated (95, 93 and 89% of total pectin, respectively) form of pectin C ) ... 

Supercritical fluid grade carbon dioxide (Scott Specialty Gases, Plums teadvi lie, PA) was used as the carrier fluid. A Lee Scientific Model 501 supercritical fluid chromatograph equipped with a flame ionization detector (FID) and a nitrogen-phosphorus detector (NPD) was the instrument utilized for these studies. Fused silica capillary columns (50 pm i.d.) were employed for all the experiments. Three column types with stationary phases of three different polarities were used SB-Methyl-100, SB-Biphenyl-30 and Carbowax 20M (0.25 pm films). Frit restrictors were used to maintain pressure and proper flow rates in the column. The restrictor was connected to the end of the column via a zero dead-volume union. The end of the restrictor was positioned in the detector at 1 mm below the end of the flame jet. The detector was operated at 325-350 C with nitrogen make-up gas at 25 mL/min. Split injection was used in these experiments with 0.2 pL injection rotor and a split ratio of approximately 10 1. 

Plum flavor An important factor is the correct quantitative ratio of a few major components such as linalool, benzaldehyde, methyl cinnamate (see cinnamic acid), 2-phenylethanol, and 4-decanolide (see alkanolides), in addition to green notes such as (Z)-3- -hexen-l-ols and 2- hexenals, as well as fruit esters, e. g., ethyl octanoate. 

The important compounds in plums are linalool, benzaldehyde, methyl cinnamate, and y-deca-lactone together with the C6-aldehydes. Benzaldehyde, nonanal, and benzyl acetate contribute to the aroma of canned plums. 

The 2-0-methyl ether of L-fucose is a structural unit in plum leaf polysaccharides. 

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