Citation: Zhi Qiang Feng, Cheng Lie Yin. The stable planar conformation of the γ-butyrolactone ring in solution[J]. Chinese Chemical Letters, ;2010, 21(2): 187-190. doi: 10.1016/j.cclet.2009.10.023 shu

The stable planar conformation of the γ-butyrolactone ring in solution

Zhi Qiang Feng ^a, ,
Cheng Lie Yin ^b

a Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, China;
b Department of Chemistry, Beijing Normal University, Beijing 100875, China

Received Date: 8 July 2009

The conformations of γ-butyrolactone ring in solution were deduced on the basis of ¹H NMR spectra of geminal protons of the butyrolactone ring.A series of optically pure(Z)-(-)-4-(1'-alkoxyl-1'-carbalkoxy-methylene)-5(R)[(1R)-menthyloxy]-γ-butyr-olactones with a stable planar conformation of γ-butyrolactone ring were found.
- β-Methylene-γ-butyrolactone,
- Planar conformation,
- Envelope conformation
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