近红外激光诱导胞嘧啶羟基构象的选择性旋光异构化。
NIR-laser-induced selective rotamerization of hydroxy conformers of cytosine.
机构信息
Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
出版信息
Phys Chem Chem Phys. 2010 Sep 7;12(33):9615-8. doi: 10.1039/c0cp00177e. Epub 2010 Jun 24.
PMID:20574589
Abstract
The relative populations of two amino-hydroxy conformers of cytosine, differing in rotation of the OH group by approximately 180 degrees , were selectively and repeatedly manipulated with narrowband, near-infrared laser light. For cytosine monomers isolated in a low-temperature Ar matrix, laser irradiations at 7013 cm(-1) and at 7034 cm(-1) were found to induce effective transformations of the two conformers into each other.
摘要
两种氨基-羟基构象的胞嘧啶相对丰度，其羟基旋转角度相差约 180 度，通过窄带近红外激光选择性地和反复地进行操纵。对于低温氩基质中分离的胞嘧啶单体，在 7013cm(-1) 和 7034cm(-1)激光辐照下，发现两种构象能够有效地相互转化。
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