ACID Pro

The course of the reaction has not been fully clarified. Hydrolytic and aromatization processes are probably responsible for the formation of colored or fluorescent deriva4 tives (cf. Potassium Hydroxide Reagent). For instance, sevin is converted to a-naphthalkali metal salt of the o-hydroxycinnamic acid pro- duced by hydrolytic cleavage of the pyrone ring is converted from the non-fluorescent cis- to the fluorescent trans-form by the action of long-wavelength UV light (X = 365 nm) [2]. 

The desirability of partial shade on tea estates has been a controversial subject. Desirable effects include temperature moderation at the leaf surface, which decreases low-humidity stress, and an increased yield of chlorophyll, amino acid, and caffeine production. The undesirable effects include decreased photosynthetic activity and competition for water and solid nutrients by the shade tree employed. In general, the trend has been toward the elimination of shade in most black-tea growing areas. Green tea products benefit from the additional chlorophyll and amino acid pro-... 

Coumarinic acid is another phenylpropanoic acid pro-moiety used to prepare double prodrugs of amines (in analogy with the phenylpropanamides shown in Fig. 8.23), as well as cyclic prodrugs of a number of peptides (8.189) [242-246], These studies confirm the considerable potential of the cyclic prodrug strategy, such compounds being characterized by metabolic stability to peptidases and good cellular permeation. 

S.2.2.3 Renal Specificity of Amino Acid Pro-drugs and their Effects... 

IPS Chimic Chirosolve Ligand exchange Po ly aery lam ide-am ino acids (pro, hypro, val, phe, pip)... 

He isoleucine, Kyn kynurenine, Leu leucine, Lys lysine, Met methionine, MTHFR 5,10-methylene tetrahydrofolate reductase, Orn ornithine, p plasma, P5C pyrroline-5-carboxylic acid, PEA phosphoethanolamine, Phe phenylalanine, P-Hyl O-phosphohydroxylysine, Pip pipecolic acid, Pro proline, Sacch saccharopine, Sar sarcosine, Ser serine,... 

R.Oda, JSocChemlnd, Japan 42, Suppl binding 414-18(1939) CA 34, 3259-60(1940) (Action of nitric acid in acetic acid pro-... 

BACE1 is the sole identified (3-secretase and is an aspartyl protease produced with a 46 amino acid pro-domain. This pro-domain must be removed for efficient... 

Table II presents examples o-f some o-f the -free amino acid pro-files o-f un-fermented and -fermented and roasted cocoa beans (47).

Table II. Some key amino acid pro-file changes in cocoa beans...

It is sometimes useful to regard the oxy-acids produced in such hydrolyses as derivatives of nonmetal hydroxides, Thus, phosphorus acid, pro-... 

D-24851 and the internal standards D-24851-D4 (formula) were obtained from Baxter Oncology (Frank-furt/Main, Germany). Methanol and hexane were used in HPLC supragradient grade quality from Biosleve Ltd. (Amsterdam, Netherlands). Dimethyl sulfoxide (DMSO), ammonium acetate, formic acid (pro analysis quality) and diethyl ether (uvasol quality) were purchased from Merck KgaA (Darmstadt, Germany). 

Stereoselective polycyclization is a highly stimulating aim. Among several contributors in that field, Yang et al. focused on Lewis-acid- pro-... 

Hydrolysis of troika acid C-methyl esters proceeds at pH 13-14 (the E isomer is much less reactive, probably owing to the proximity of the iminohydroxy anion to the carboxylate group). To explore phosphorylation from troika acid pro-... 

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