title: N-[(2S)-4-Chloro-2-(l-menth-yloxy)-5-oxo-2,5-dihydro-furan-3-yl]-l-valine.
abstract: 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.
authors.affiliation: School of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China.
authors.forename: Xiu-Mei
authors.initials: XM
authors.lastname: Song
authors.forename: Zhao-Yang
authors.initials: ZY
authors.lastname: Li
authors.forename: Zhao-Yang
authors.initials: ZY
authors.lastname: Wang
authors.forename: Jian-Xiao
authors.initials: JX
authors.lastname: Li