Metabolic Products of Fungi. IV. Isolation of the Coloring Matters of Endothia Spp. and the Respective Identities of Endothianin and Redicalisin with Skyrin and Rugulosin

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  • 菌類代謝産物の研究(第4報)Endothia Spp.の色素の分離並びにEndothianin及びRadicalisinのSkyrin及びRugulosinとの同定

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Endothianin isolated from Endothia parasitica (Murr.) Anderson et Anderson and E.fluens Shear et Stevens (syn. E.radicalis Fr.) was proved to be identical with skyrin, C30H<18>O<10>, which was obtained from some strains of Penicillium islandicum Sopp. The identity was established by admixture of tetraethoxycarbonyl ethers (m.p. and mixed m.p. 171∼173°) of both pigments. Radicalisin, C30H<22>O<19> or C30H<24>O<10>, isolated from the above Endothia sp. along with endothianin was identified with rugulosin produced by Penicillium rugulosum Thom by the comparison of the infrared spectra and by a mixed fusion of their hexabenzoates (m.p. and mixed m.p. 224∼226°) and hexamethyl ethers (m.p. and mixed m.p. 279∼280°).

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