Molecular Basis of Absorption at 340 nm of 3-Ketoglucosides under Alkaline Conditions.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-20 eCollection Date: 2024-01-01 DOI:10.5458/jag.jag.JAG-2023_0014

Motomitsu Kitaoka, Ayu Takano, Mei Takahashi, Yoshiki Yamakawa, Shinya Fushinobu, Nobuyuki Yoshida

引用次数: 0

Abstract

Transient absorption at 340 nm under alkaline conditions has long been used to detect the presence of 3-keto-O-glycosides without understanding the molecular basis of the absorbance. The time course of A_{340 nm} for the alkaline treatment of 3-ketolevoglucosan, an intramolecular 3-keto-O-glycoside, was investigated to identify the three products generated through alkaline treatment. By comparing the spectra of these compounds under neutral and alkaline conditions, we identified 1,5-anhydro-D-erythro-hex-1-en-3-ulose (2-hydroxy-3-keto-D-glucal) as being the compound responsible for the absorption.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

碱性条件下 3-Ketoglucosides 在 340 纳米波长处吸收的分子基础。

长期以来，在碱性条件下 340 纳米波长处的瞬态吸收一直被用来检测 3-酮-O-糖苷的存在，但却不了解吸光度的分子基础。我们研究了分子内 3-酮-O-糖苷在碱性处理 3-ketolevoglucosan 时 A340 nm 波长的时间过程，以确定碱性处理产生的三种产物。通过比较这些化合物在中性和碱性条件下的光谱，我们确定 1,5-anhydro-D-erythro-hex-1-en-3-ulose (2-hydroxy-3-keto-D-glucal) 是导致吸收的化合物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.