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01-01-2018 | Note

Production of an emericellin and its analogues as fungal biological responses for Shimbu-to extract

Authors: Nobuhiro Inoue, Daigo Wakana, Hisashi Takeda, Takashi Yaguchi, Tomoo Hosoe

Published in: Journal of Natural Medicines | Issue 1/2018

Abstract

This research examined the production of fungal metabolites as a biological response to Kampo medicines. Shimbu-to (SMB) is a Kampo medicine composed of five herbal components: peony root (Shakuyaku), ginger (Shokyo), processed aconite root (Bushi), Poria sclerotium (Bukuryo), and Atractylodes lancea rhizomes (Sojutsu). High-performance liquid chromatography (HPLC) analysis of the fungus Aspergillus nidulans CBS 112.46 incubated in potato dextrose broth supplemented with SMB extract revealed emericellin (2) as the major peak and new xanthone analogues 24-hydroxyshamixanthone (1), shamixanthone (3), epishamixanthone (4), pre-shamixanthone (5), and variecoxanthone A (6) as minor peaks. The structure of 1 was determined by detailed analysis of 1D-NMR, 2D-NMR, and MS data. The results suggest that SMB extract regulates the biosynthesis of emericellin and its analogues in A. nidulans. Further investigations revealed that glucose induces the biosynthesis of emericellin and its analogues in A. nidulans in a concentration-dependent manner.

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Title: Production of an emericellin and its analogues as fungal biological responses for Shimbu-to extract
Authors: Nobuhiro Inoue
Daigo Wakana
Hisashi Takeda
Takashi Yaguchi
Tomoo Hosoe
Publication date: 01-01-2018
Publisher: Springer Singapore
Published in: Journal of Natural Medicines / Issue 1/2018
Print ISSN: 1340-3443
Electronic ISSN: 1861-0293
DOI: https://doi.org/10.1007/s11418-017-1156-8

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Production of an emericellin and its analogues as fungal biological responses for Shimbu-to extract

Abstract

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Abstract

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