An Improverd Procedure for the Isolation of Suprasterol2 I AND 2 From a Photochemical Reaction Mixture of Ergocalciferol(Vitamin D2)
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- An improved procedure for the isolation of suprasterol2 I and II from a photochemical reaction mixture of ergocalciferol (vitamin D2).
- Improverd Procedure for the Isolation o
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An improved procedure for the isolation of suprasterol2 I and II from a photochemical reaction mixture of ergocalciferol (vitamin D2) and their spectral data are described in this paper, when a solution of ergocalciferol in ethanol was irradiated by UV light from a high-pressure mercury lamp, the reaction mixture gave six spots, including suprasterol2 I and II, on the thin-layer chromatogram, while the peaks corresponding to pyro-D2, isopyro-D2, 5, 6-trrans-D2, suprasterol2 I and II were observed in the gas chromatogram obtained from a capillary column GLC (Supra-sterol2 I and II were main peaks). After purifying the mixture by column chromatography on silica gel containing 12% alumina as an adsorbent, two main fractions were isolated. The data of their spectra, TLC and GLC showed that the former fraction was suprasterol2 II while the latter was suprasterol2 I and that the both fractions contained the respective compound only. Both suprasterol2 were crystallized as the 3, 5-dinitro-benzoates.
収録刊行物
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- Journal of Nutritional Science and Vitaminology
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Journal of Nutritional Science and Vitaminology 23 (4), 291-298, 1977
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詳細情報 詳細情報について
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- CRID
- 1390001206325219584
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- NII論文ID
- 130001372319
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- NII書誌ID
- AA00703822
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- ISSN
- 18817742
- 03014800
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- NDL書誌ID
- 1912550
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- PubMed
- 303285
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- PubMed
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- 使用不可