Rubralactone, Rubralides A, B and C, and Rubramin Produced by Penicillium rubrum

Yasuo KIMURA; Takashi YOSHINARI; Hiroyuki KOSHINO; Shozo FUJIOKA; Katsuhide OKADA; Atsumi SHIMADA

doi:10.1271/bbb.70112

Organic Chemistry Regular Papers

Rubralactone, Rubralides A, B and C, and Rubramin Produced by Penicillium rubrum

Yasuo KIMURA, Takashi YOSHINARI, Hiroyuki KOSHINO, Shozo FUJIOKA, Katsuhide OKADA, Atsumi SHIMADA

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Keywords: rubralactone, rubralides, rubramin, Penicillium rubrum

JOURNAL FREE ACCESS

2007 Volume 71 Issue 8 Pages 1896-1901

DOI https://doi.org/10.1271/bbb.70112

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Abstract

Rubralactone (1), rubralides A, B and C (2–4), rubramin (5), and 2-formyl-3,5-dihydroxy-4-methylbenzoic acid (6), were isolated from Penicillium rubrum, and their structures established by spectroscopic methods including 2D NMR. The effects on plant growth of 1–6 were examined using the lettuce seedling bioassay. Compound 1 promoted root growth. Compounds 2, 3 and 5 inhibited the growth of lettuce seedlings, but 4 and 6 did not have any inhibitory effect on their growth.

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