title: tert-Butyl 4-isopropyl-2-oxo-6-phenyl-3,4-dihydro-2H-pyran-3-carboxyl-ate.
abstract: In the title compound, C(19)H(24)O(4), the six-membered lactone ring adopts an envelope conformation with the tert-butoxy-carbonyl and isopropyl substituents in axial positions, and the phenyl group in an equatorial position. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Miao
authors.initials: M
authors.lastname: Yu
authors.forename: Si
authors.initials: S
authors.lastname: Li
authors.forename: Ning
authors.initials: N
authors.lastname: Jiao