The structure of covalent hydrates of alloxazines. A reinvestigation
作者:Jacek Koziol、Bozena Tyrakowska、Franz Müller
DOI:10.1002/hlca.19810640612
日期:1981.9.23
It is shown by 13C-NMR. and synthesis of 6,7-dimethyl-3-ethoxycarbonylamino-quinoxaline-2-carboxamide (5) and methyl 6,7-dimethyl-3-(N′-methylureido)-quinoxaline-2-carboxylate (6) that hydrolysis of lumichrome (1, R = H) must yield 6,7-dimethyl-3-ureidoquinoxaline-2-carboxylic acid (2, R = H) and not 6,7-dimethyl-2-oxo-1,2,9,9a-tetrahydrooxazolo[4,5-b]quinoxaline-9a-carboxamide (2a, R = H), as previously
用13 C-NMR表示。发光水解的6,7-二甲基-3-乙氧基羰基氨基喹喔啉-2-羧酰胺(5)和6,7-二甲基-3-(N'-甲基脲基)-喹喔啉-2-羧酸甲酯(6)的合成(1,R = H)必须生成6,7-二甲基-3-脲基喹喔啉-2-羧酸(2,R = H)而不是6,7-二甲基-2-氧代-1,2,9,9a-如先前所提出的,四氢恶唑并[4,5 - b ]喹喔啉-9a-羧酰胺(2a,R = H)。