Song Xiu-Mei, Li Zhao-Yang, Wang Zhao-Yang, Li Jian-Xiao
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2009 Jun 17;65(Pt 7):o1585. doi: 10.1107/S1600536809022120.
The title compound, C(19)H(30)ClNO(5), was obtained by the tandem asymmetric Michael addition-elimination reaction of (5S)-3,4-dichloro-5-(l-menth-yloxy)furan-2(5H)-one and l-valine in the presence of potassium hydroxide. The furan-one unit is approximately planar (r.m.s. deviation = 0.0204 Å) and the six-membered cyclo-hexane ring adopts a chair conformation. The crystal structure is stabilized by a network of O-H⋯O and N-H⋯O hydrogen bonds.