Microwave Effect for Glycosylation Promoted by Solid Super Acid in Supercritical Carbon Dioxide

Hinou, Hiroshi; Saito, Naohiro; Ogawa, Masato; Maeda, Takahiko; Nishimura, Shin-Ichiro

Microwave Effect for Glycosylation Promoted by Solid Super Acid in Supercritical Carbon Dioxide

Hinou, Hiroshi; Saito, Naohiro; Ogawa, Masato et al.

International Journal of Molecular Sciences, 2009, 10(12), 5285-5295

Permalink : https://hdl.handle.net/2115/42525

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アクセス権	open access
URI	https://hdl.handle.net/2115/42525
タイトル	Microwave Effect for Glycosylation Promoted by Solid Super Acid in Supercritical Carbon Dioxide
著者	Hinou, Hiroshi ; Saito, Naohiro ; Ogawa, Masato ; Maeda, Takahiko ; Nishimura, Shin-Ichiro
e-Rad_Researcher 70333333 著者名 Hinou, Hiroshi
著者名 Saito, Naohiro
著者名 Ogawa, Masato
著者名 Maeda, Takahiko
e-Rad_Researcher 00183898 著者名 Nishimura, Shin-Ichiro
言語	英語
キーワード	glycosylation
	microwave
	super solid acid
	supercritical carbon dioxide
	dielectric constant
	electric delocalization
	symmetric structure
発行日	2009-12
出版者	Molecular Diversity Preservation International (MDPI)
収録物名	International Journal of Molecular Sciences
巻(号)	10(12)
ページ	5285-5295
抄録	The effects of microwave irradiation (2.45 GHz, 200 W) on glycosylation promoted by a solid super acid in supercritical carbon dioxide was investigated with particular attention paid to the structure of the acceptor substrate. Because of the symmetrical structure and high diffusive property of supercritical carbon dioxide, microwave irradiation did not alter the temperature of the reaction solution, but enhanced reaction yield when aliphatic acceptors are employed. Interestingly, the use of a phenolic acceptor under the same reaction conditions did not show these promoting effects due to microwave irradiation. In the case of aliphatic diol acceptors, the yield seemed to be dependent on the symmetrical properties of the acceptors. The results suggest that microwave irradiation do not affect the reactivity of the donor nor promoter independently. We conclude that the effect of acceptor structure on glycosylation yield is due to electric delocalization of hydroxyl group and dielectrically symmetric structure of whole molecule.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 3.0 Unported
PISSN	1422-0067
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/ijms10125285