| 释义 |
lactonic, a. Chem.|lækˈtɒnɪk|
[f. lacto- (in chem. names: see below).]
1. lactonic acid: [tr. G. lactonsäure (Hlasiwetz & Habermann 1870, in Ann. d. Chem. u. Pharm. CLV. 139), f. lact-ose lactose + -on -one: see -ic.]
a. = galactonic acid.
1871Jrnl. Chem. Soc. XXIV. 547 Lactonic acid, which, according to Fittig's views, must also be monobasic..is found to be really a bibasic acid. 1886E. F. Smith tr. V. von Richter's Chem. Carbon Compounds 378 Lactonic acid, C6H10O6, is produced from milk sugar and galactose by the action of bromine water and silver oxide. It is a deliquescent, crystalline mass, melting at 100°.
b. = lactobionic acid s.v. lacto- 2.
1957Chem. Abstr. LI. Subject Index 1358/1 Lactonic acid, calcium salt, calcium gluconate solubilization with. 1964N. G. Clark Mod. Org. Chem. xvi. 328 Hydrolysis of lactonic acid yields galactose and gluconic acid.
2. [f. lactone + -ic.] Containing the characteristic ring structure of lactones (sense 2).
1885Jrnl. Chem. Soc. XLVIII. 963 (heading) Conversion of lactonic acids into lactones. 1888Ibid. LIV. 251 When the lactonic acids, CHX{btr1}{bbr1}CH(COOH)O·CO·CH2{bbr1}{btr1}, obtained by the union of aldehydes with succinic acid, are boiled..the greater portion decomposes yielding..the monobasic unsaturated acids..together with the lactones. 1924Ibid. CXXVI. i. 45 When it [sc. isocampholactone] is oxidised by means of nitric acid, there are formed nitro⁓isocampholactone and a lactonic acid. 1968Jrnl. Agric. & Food Chem. XVI. 252 (heading) Lactonic compounds of apricot. 1970Acta Chem. Scand. XXIV. 3428/1 (heading) Investigation of lactonic acids in the latex of Euphorbium canariensis L. 1971Agric. & Biol. Chem. (Tokyo) XXXV. 27 (heading) Studies on the new seventeen member lactonic antibiotics. |