| 单词 | pyrrolidine ring |
| 释义 | > as lemmaspyrrolidine ring pyrrolidine ring n. a saturated ring of four carbon atoms and one nitrogen. ΘΚΠ the world > matter > chemistry > organic chemistry > organic compounds > [noun] > heterocyclic compounds > containing nitrogen > pyrrolidine > pyrrolidine ring pyrrolidine ring1898 pyrrolidine nucleus1913 1898 Lancet 23 July 199/1 That atropine very probably contains a pyrrolidine ring has only recently been shown. 1963 T. Robinson Org. Constit. Higher Plants xii. 256 Leete..using 1, 4-labelled putrescine fed to tobacco found that it was an efficient precursor of the pyrrolidine ring in nicotine. 1992 Jrnl. Molecular Liquids 51 67 A small proportion of the complexes are formed on the nitrogen atom of the pyrrolidine ring. < as lemmas |
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