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(2S)-N-(硒代乙酰基)脯氨酸甲酯中羰基碳原子的锥形化

Pyramidalization of a carbonyl C atom in (2S)-N-(seleno-acet-yl)proline methyl ester.

作者信息

Guzei Ilia A, Choudhary Amit, Raines Ronald T

机构信息

Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave, Madison, WI 53706-1322, USA.

出版信息

Acta Crystallogr Sect E Struct Rep Online. 2013 Apr 30;69(Pt 5):o805-6. doi: 10.1107/S1600536813011112. Print 2013 May 1.

DOI:10.1107/S1600536813011112
PMID:23723945
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3648325/
Abstract

The title compound, C8H13NO2Se, crystallizes as a non-merohedral twin with an approximate 9:1 component ratio with two symmetry-independent mol-ecules in the asymmetric unit. Our density-functional theory (DFT) computations indicate that the carb-oxy C atom is expected to be slightly pyramidal due to an n→ π* inter-action, wherein the lone pair (n) of the Se atom overlap with the anti-bonding orbital (π*) of the carbonyl group. Such pyramidalization is observed in one mol-ecule of the title compound but not the other.

摘要

标题化合物C₈H₁₃NO₂Se以非镜像孪晶形式结晶,非对称单元中有两个对称独立的分子,其组成比例约为9:1。我们的密度泛函理论(DFT)计算表明,由于n→π相互作用,羧基C原子预计会略微呈金字塔形,其中Se原子的孤对电子(n)与羰基的反键轨道(π)重叠。在标题化合物的一个分子中观察到了这种金字塔化,但在另一个分子中没有。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/12abedbbc266/e-69-0o805-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/f24666df7367/e-69-0o805-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/d0104a15d41b/e-69-0o805-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/12abedbbc266/e-69-0o805-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/f24666df7367/e-69-0o805-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/d0104a15d41b/e-69-0o805-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1437/3648325/12abedbbc266/e-69-0o805-fig3.jpg

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本文引用的文献

1
An evaluation of peptide-bond isosteres.肽键等排体评价
Chembiochem. 2011 Aug 16;12(12):1801-7. doi: 10.1002/cbic.201100272. Epub 2011 Jul 12.
2
Modulation of an n→π* interaction with α-fluoro groups.通过α-氟基团对n→π*相互作用的调控。
ARKIVOC. 2010 Jul 8;2010:251-262.
3
Signature of n→π* interactions in α-helices.α-螺旋中 n→π* 相互作用的特征。
n→π* 相互作用调节蛋白质中半胱氨酸残基和二硫键的性质。
J Am Chem Soc. 2018 Dec 19;140(50):17606-17611. doi: 10.1021/jacs.8b09701. Epub 2018 Dec 6.
4
The n→π* Interaction.n→π* 相互作用。
Acc Chem Res. 2017 Aug 15;50(8):1838-1846. doi: 10.1021/acs.accounts.7b00121. Epub 2017 Jul 23.
5
n→π* interactions engender chirality in carbonyl groups.n→π*相互作用在羰基中产生手性。
Org Lett. 2014 Jul 3;16(13):3421-3. doi: 10.1021/ol5012967. Epub 2014 Jun 13.
6
n→π* interactions of amides and thioamides: implications for protein stability.酰胺和硫代酰胺的 n→π* 相互作用:对蛋白质稳定性的影响。
J Am Chem Soc. 2013 May 29;135(21):7843-6. doi: 10.1021/ja4033583. Epub 2013 May 20.
Protein Sci. 2011 Jun;20(6):1077-81. doi: 10.1002/pro.627. Epub 2011 Apr 26.
4
n-->pi* interactions in proteins.蛋白质中的 n—>pi* 相互作用。
Nat Chem Biol. 2010 Aug;6(8):615-20. doi: 10.1038/nchembio.406. Epub 2010 Jul 11.
5
n --> pi* Interaction and n)(pi Pauli repulsion are antagonistic for protein stability.n-π*相互作用和 n)(π 保罗排斥对于蛋白质稳定性是拮抗的。
J Am Chem Soc. 2010 May 19;132(19):6651-3. doi: 10.1021/ja100931y.
6
Quantum mechanical origin of the conformational preferences of 4-thiaproline and its S-oxides.量子力学对 4-硫代脯氨酸及其 S-氧化物构象偏好的起源。
Amino Acids. 2011 Jun;41(1):181-6. doi: 10.1007/s00726-010-0504-8. Epub 2010 Mar 12.
7
Nature of amide carbonyl--carbonyl interactions in proteins.蛋白质中酰胺羰基 - 羰基相互作用的本质
J Am Chem Soc. 2009 Jun 3;131(21):7244-6. doi: 10.1021/ja901188y.
8
A short history of SHELX.SHELX简史。
Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22. doi: 10.1107/S0108767307043930. Epub 2007 Dec 21.
9
New software for searching the Cambridge Structural Database and visualizing crystal structures.用于搜索剑桥结构数据库和可视化晶体结构的新软件。
Acta Crystallogr B. 2002 Jun;58(Pt 3 Pt 1):389-97. doi: 10.1107/s0108768102003324. Epub 2002 May 29.
10
Collagen stability: insights from NMR spectroscopic and hybrid density functional computational investigations of the effect of electronegative substituents on prolyl ring conformations.胶原蛋白稳定性:来自核磁共振光谱和杂化密度泛函计算研究的见解,关于电负性取代基对脯氨酰环构象的影响
J Am Chem Soc. 2002 Mar 20;124(11):2497-505. doi: 10.1021/ja0166904.