菌類成分研究(第3報)Neocercosporinの構造について

松枝 澄; 高橋 良樹; 増地 矢恵子; 高垣 啓一; 下山 満

doi:10.1248/yakushi1947.98.11_1553

Studies on Fungal Products. III. Structure of Neocercosporin

SUMU MATSUEDA, RYOKI TAKAHASHI, YAEKO MASUCHI, KEIICHI TAKAGAKI, MITSURU SHIMOYAMA

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Keywords: Cercosporina Kikuchii nov. var., Cercospora, perylenequinone, neocercosporin, cercosporin, isocercosporin

JOURNAL FREE ACCESS

1978 Volume 98 Issue 11 Pages 1553-1555

DOI https://doi.org/10.1248/yakushi1947.98.11_1553

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Abstract

The novel fungal pigment, neocercosporin (I), C₂₉H₂₆O₁₀, mp 237°, was isolated together with cercosporin (II) from Cercosporina Kikuchii nov. var. (MITTS-1 strain) as reddish violet orthorhombic crystals. The structure of I was elucidated as 5, 8-dihydroxy-2, 11-dimethoxy-1, 12-(2-hydroxypropyl)-6, 7-methylenedioxyperylene-3, 10-quinone. II was photosensitive and isomerized to isocercosporin (III) but I was stable and was not photosensitive.

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