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[1]蔡晓丽,张越非,余军霞,等.振动圆二色谱法测定槐果碱的绝对构型和构象分布[J].武汉工程大学学报,2016,38(2):103-108.[doi:10. 3969/j. issn. 1674-2869. 2016. 02. 001]
 CAI Xiaoli,ZHANG Yuefei,YU Junxia,et al.Absolute Configuration and Conformation of Sophocarpine by Vibrational Circular Dichroism[J].Journal of Wuhan Institute of Technology,2016,38(2):103-108.[doi:10. 3969/j. issn. 1674-2869. 2016. 02. 001]
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振动圆二色谱法测定槐果碱的绝对构型和构象分布(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
38
期数:
2016年2期
页码:
103-108
栏目:
化学与化学工程
出版日期:
2016-04-30

文章信息/Info

Title:
Absolute Configuration and Conformation of Sophocarpine by Vibrational Circular Dichroism
作者:
蔡晓丽1张越非1余军霞1XU Yunjie 2池汝安1
1. 武汉工程大学绿色化工过程省部共建教育部重点实验室,湖北 武汉 430074;
2. Department of Chemistry,University of Alberta,Alberta,T6G 2G2,Canada
Author(s):
CAI Xiaoli1 ZHANG Yuefei1 YU Junxia1 XU Yunjie2 CHI Ru’an1
1. Key Laboratory of Green Chemical Process (Wuhan Institute of Technology),Ministry of Education, Wuhan 430074, China;
2. Department of Chemistry,University of Alberta,Alberta T6G 2G2 ,Canada
关键词:
槐果碱 傅里叶红外光谱 振动圆二色谱 密度泛函算法 氘代氯仿 氘代二甲亚砜 绝对构型 构象
Keywords:
sophocarpine FTIR VCD DFT CDCl3 DMSO-d6 absolute configuration conformation
分类号:
069
DOI:
10. 3969/j. issn. 1674-2869. 2016. 02. 001
文献标志码:
A
摘要:
采用傅里叶红外光谱仪( FT-IR )和振动圆二色谱仪(VCD ),在氘代溶剂(CDCl 3 DMSO-d 6) 中检测 槐果碱的 IR VCD 光谱 . 运用密度泛函算法(DFT), 分别在极化连续介质模型(PCM )以及显示溶剂模型 和隐式溶剂模型的结合模型(Explicit + PCM) 中模拟优化,得到槐果碱的两种构象异构体: C/D-cis C/D-trans. B3LYP/6-311+G d p) 水平上计算这两种构象异构体的理论 IR VCD 光谱,并与相应的实验 光谱进行对比 . 玻尔兹曼分布显示,在不同溶液状态下, C/D-cis C/D-trans 均以一定比例共存 . 其中,在 Explicit + PCM-CDCl 3 模型中模拟优化后的计算结果与相应的实验结果(CDCl 3 溶剂中检测的 IR VCD
Abstract:
Fourier Transform Infrared Spectrometer(FTIR) and Vibrational Circular Dichroism (VCD) spectra of sophocarpine were measured in both deuterated chloroform and dimethyl sulfoxide-d6 (CDCl3 and DMSO-d6) using FTIR equipped with a VCD module. Two conformers of sophocarpine: C/D-cis isomer and C/D-trans isomer (C/D-cis and C/D-trans) were obtained by simulating the spectra using the Density Functional Theory under the polarizable continuum model and the combination of explicit and implicit solvation model. In addition, theoretical FTIR and VCD spectra of the two conformers were calculated at B3LYP/6-311+G(d, p)level and compared with the experimental spectra. Boltzmann distribution shows that C/D-cis and C/D-trans coexist with a certain percentage at different solution conditions. Calculated results by using the combination of explicit and implicit solvation model show a good agreement with the corresponding experimental results best. Such an agreement allows the determination of absolute configuration and conformation of sophocarpine.

参考文献/References:

参考文献:
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更新日期/Last Update: 2016-05-03