英语词汇“cupreine”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	cupreine
释义	cupreine Chem.\|ˈkjuːpriːɪn\| [f. cuprea + -ine⁵.] A cinchona alkaloid, C₁₉H₂₂N₂O₂, contained in cuprea bark. 1884Paul & Cownley in Pharm. Jrnl. 20 Sept. 222/1 This latter alkaloid is susceptible of being split into two other alkaloids, one of them being..quinine..the other an alkaloid.. to which we will provisionally give the name of ‘cupreine’.1886Encycl. Brit. XX. 185/1 Homoquinine has been shown..to be decomposed on treatment with caustic soda into quinine and a new alkaloid, cupreine.1939Thorpe's Dict. Appl. Chem. (ed. 4) III. 160/2 Cupreine..occurs together with other cinchona alkaloids..in the so-called ‘Cuprea bark’..which is no longer collected commercially.1966McGraw-Hill Encycl. Sci. & Technol. XI. 193/2 The cinchona alkaloids..are quinoline derivatives; in quinine and quinidine, R = CH₃O; in cinchonine, R = H; and in cupreine, R = OH.
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