| 单词 | pyrone ring |
| 释义 | > as lemmaspyrone ring pyrone ring n. the six-membered ring present in the pyrones; (also) = pyran ring n. at pyran n. Compounds. ΚΠ 1905 Jrnl. Amer. Chem. Soc. 27 1311 Meyer attributes the fluorescence of organic compounds in solution to..a so-called ‘fluorophore’ group. In the fluoresceins, for example, it is the pyrone ring. 1962 K. Venkataraman in T. A. Geissman Chem. Flavonoid Compounds iv. 94 Isoflavones undergo hydrolysis with opening of the pyrone ring under mild conditions of alkali treatment. 2004 I. Ramzan & Van Hoan Tran in Y. N. Singh Kava v. 97 Replacement of the methoxy group on the pyrone ring of methysticin with an ethoxy group yielded an active compound that produced mild sedation. < as lemmas |
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