Supplement of the Notice on the Formation of 6-Methyl-7-hydroxyribolumazine. (Application of Chromatography. XLVI.)

概要

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To determine whether the V Comp. detected in the extract of Er. ashbyii was present originally in it or produced supplementally by photooxidation of G Comp., the mycelium was extracted in an atmosphere of nitrogen and the extract was investigated by TLC. The result proved the original existence of all of V. B_2,G and V Comps. But taking into consideration Uehara's report on hypoxanthine. G Comp. was examined if it is photooxidized to V Comp. Namely, the extract of the mycelium was exposed to sunlight and investigated by TLC, when GH and Lum. C were detected apparently but V Comp. did not increased. On the other hand, G Comp. was photodecomposed in phosphate buffer at various pHs, when GH was produced at any pH, while V Comp. was formed only at pH>6.52 besides GH. The same experiment was conducted in the presence of V. B_2,when Lum. C was produced at any pH, but Lum. F. at pH>6.52 in addition to the above products.
公益社団法人日本薬学会の論文
1964-03-25