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Veronicoside, a new iridoid glucoside from Veronica officinalis L. (Scrophulariaceae) A new iridoid glucoside, Veronicoside ( 1 ) has been isolated from Veronica officinalis L. The structure of 1 has been determined by chromatographic and spectroscopic analysis as 6-benzoylcatalpol. 相似文献
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M. Röhr 《Monatshefte für Chemie / Chemical Monthly》1968,99(6):2278-2290
Characteristic properties of the new enzymehippurate hydrolase are reported:
- The Michaelis constant for hippurate hydrolysis is 5.5·10?4 mole/l at 5° and pH 7.5. The specific activity of the purified enzyme preparation is 7.5 μmole/minute · mg enzyme protein at 37° and pH 7.5. The pH optimum is 7.5.
- The effects of temperature on the reaction rate and on the stability of the enzyme were determined.
- The effects of various inhibitors (HgCl2, pCMB, EDTA, 8-hydroxyquinoline) and cations were studied. Participation of metal ions in the catalytic function ofhippurate hydrolase was not detectable.
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W. Crookes und A. Lamy 《Fresenius' Journal of Analytical Chemistry》1862,1(1):477-482
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A. H. Church H. C. Sorby und D. Forbes 《Fresenius' Journal of Analytical Chemistry》1869,8(1):467-471
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