| 释义 |
kosin Chem.|ˈkəʊsɪn|
Also † koussin.
[ad. It. koussino (C. Pavesi 1858, in Giornale di Farm., di Chim. VII. 49), f. kouss-o kousso + -ino -in1.]
Either of two related bicyclic phenols (not orig. differentiated), C25H32O8, which are responsible for the anthelmintic property of kousso and are isolated as pale yellow crystals.
1875Pharmaceutical Jrnl. & Trans. V. 562/2 From the aqueous residue of the alcoholic extract the koussin of Bendall, existing as a calcium compound, is precipitated as a more or less crystalline whitish powder. 1875Jrnl. Chem. Soc. XXVIII. 468 The koso flowers yield about 3 per cent. of kosin. 1911Encycl. Brit. XV. 921/1 Kousso... The active principle is koussin or kosin,..which is soluble in alcohol and alkalis, and may be given in doses of thirty grains. 1937Jrnl. Chem. Soc. 563 The pale yellow product was identical with Merck's kosin... By fractional crystallisation we were able to separate this material into two distinct compounds, α-kosin, m.p. 158° (yellow needles), and β-kosin, m.p. 120° (yellow prisms). 1952Ibid. 3103 Extracts of the flowers [sc. Hagenia abyssinica] contained large amounts of amorphous material, some of which could be converted into kosins by the action of alkali. |