On the existence of a mono-vinyl d-urobilin.
نویسندگان
چکیده
Chromic acid degradation of a d-urobilin, obtained after incubation of bilirubin in fecal bacterial cultures, gave methylvinylmaleimide and methylethylmaleimide. The d-urobilin, molecular weight 588, C(33)H(40)-N(4)O(6), clearly showed the presence of both vinyl and ethyl resonances in the nuclear magnetic resonance spectrum. These results point unambiguously to a urobilin structure with one vinyl and one ethyl beta-substituent.
منابع مشابه
Differences in the formation of mesobiliviolin and glaucobilin and d- and i-urobilins.
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ورودعنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 71 5 شماره
صفحات -
تاریخ انتشار 1974