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Your search keyword '"Toshihiko Osawa"' showing total 3 results
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3 results on '"Toshihiko Osawa"'

1. Chemical and in vitro biological formation of octahydrocurcumin stereoisomers, and in vitro activity of raceme and meso-octahydrocurcumin.

Author

Toshio Niwa, Yoji Kato, and Toshihiko Osawa

Subjects
SACCHAROMYCES cerevisiae, CURCUMIN, PALLADIUM catalysts
Abstract

The PtO2 -catalyzed hydrogenation of curcumin produced slightly predominant meso -octahydrocurcumin than raceme octahydrocurcumin. Similar result was found in the product obtained from tetrahydrocurcumin and NaBH4, whereas using palladium carbon as a catalyst increased the meso-octahydrocurcumin ratio. Compared with chemical methods, baker's yeast produced 3S,5S-octahydrocurcumin and meso- octahydrocurcumin from tetrahydrocurcumin. The different activity between raceme and meso-octahydrocurcumin was not found in our experiments. [ABSTRACT FROM AUTHOR]

Published
2023
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