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Citation: WANG Zong-De, XIAO Zhuan-Quan. Synthesis and ¹³C Chemical Shift Analysis of Nopol Derivatives[J]. Chinese Journal of Applied Chemistry, ;2002, 19(5): 497-498. shu

Synthesis and ¹³C Chemical Shift Analysis of Nopol Derivatives

WANG Zong-De ^a,, ,
XIAO Zhuan-Quan ^b

1.
a College of Forestry, Jiangxi Agricultural University, Nanchang 330045;
2.
b College of Chemistry and Biological Science, Jiangxi Normal University, Nanchang

Corresponding author: WANG Zong-De,
Received Date: 18 September 2001
Available Online: 10 February 2002
Fund Project: 江西省自然科学基金资助项目(980219) (980219)

Five nopyl ethers and two nopyl esters have been synthesized, and their ¹³C NMR spectra have been recorded. The C-6, C-7 chemical shifts in their ¹³C NMR spectra have been discussed in terms of configuration structure. It is suggested that the C-1, C-2, C-3, C-4 and C-5 atoms are in the same plan and the 6,6-dimethylbicyclo[3.1.1]hept-2-ene part is in the Y-shape. The ethers and esters obtained appeared to be derivatives of apopinene 6,6 dimethylbicyclo[3.1.1]hept-2-ene with substituents at the C-2 position. The effect of substituents occured mainly on the chemical shifts of C-1, C-2 and C-3. There seemes a weaker steric interaction of the substituents with other carbon atoms.
- nopyl ether,
- nopyl ester,
- ¹³C chemical shift
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Synthesis and ¹³C Chemical Shift Analysis of Nopol Derivatives