| 释义 |
veratr-
combining form or stem of veratrum, occurring in chemical terms, as veratralbia, -albine (see quots.); veratrate, a salt of veratric acid (1884 Imp. Dict.); veratric a., derived from or contained in species of Veratrum; veˈratridine [-idine], an alkaloid ester, C36H51NO11, present in veratrum and sabadilla and having anti-hypertensive properties, but now used chiefly for experimental purposes; veratroidea (-oidia) = veratrine; veratroidine (see quot.); veratrol, a colourless aromatic oil obtained by distilling veratric acid with excess of baryta.
1876H. C. Wood Therap. (ed. 2) 156 Chas. L. Mitchell..finds two alkaloids in the rhizome [of Veratrum album], one of which he denominates jervia, the other *veratralbia.
1891Cent. Dict., *Veratralbine, an alkaloid obtained from Veratrum album.
1843Penny Cycl. XXVI. 251 *Veratric acid, the acid with which veratria exists combined in Cevadilla. 1866Chambers's Encycl. VIII. 395/2 Two special organic acids, to which the names Cevadic and Veratric acids have been given. 1877Watts Fownes' Chem. II. 542 Dimethyl-protocatechuic or Veratric acid..is contained in sabadilla seeds (from Veratrum Sabadilla).
1907Brit. Pharmaceut. Codex 242 Cevadine is accompanied in cevadilla seeds by the alkaloids *veratridine..and sabatrine. 1935Jrnl. Chem. Soc. 123 On hydrolysis, veratridine gave veratric acid and..cevine. 1954O. Krayer in V. A. Drill Pharmacol. in Med. xxxiii. 8/2 The monoester veratridine is of no clinical use because it has an inadequate therapeutic range and its duration of action is too short. 1976Nature 25 Mar. 337/2 The effects of veratridine, an alkaloid well known for its ability to increase Na+ permeability in nerve cells, were examined. 1976Veratridine [see sabadine].
1874Garrod & Baxter Mat. Med. 382 This rhizome is stated to contain two alkaloids, Viridia and *Veratroidea;..the latter is insoluble in ether. 1879H. C. Wood Therap. 156 Recently Prof. Wormley has arrived at the conclusion that veratroidia is identical with veratria.
1891Cent. Dict., *Veratroidine, an alkaloid, supposed to be identical with rubijervine, obtained from Veratrum viride.
1868Watts Dict. Chem. V. 997 *Veratrol does not appear to unite with alkaline bisulphites. |