title: 2,4-Di-tert-butyl-6-[(R/S)-1-(3,5-di-tert-butyl-2-hy-droxy-phen-yl)eth-yl]phenyl [(1R,4S)-7,7-dimethyl-2-oxobicyclo-[2.2.1]heptan-1-yl]methane-sulfonate.
abstract: The asymmetric unit of the title compound, C(40)H(60)O(5)S, comprises two diastereomers related, except for the chiral camphor groups, by a pseudo-inversion centre. In both diasteromers, the camphor sulfate moiety maintained the absolute configuartion (R,S) of the precursor. However, the absolute configurations at the methine C atoms are of opposite chirality. Both mol-ecules reveal intra-molecular O-H⋯O hydrogen bonds, whereas van der Waals inter-actions define the crystal packing.
authors.forename: Cheng
authors.initials: C
authors.lastname: Wang
authors.forename: Jincai
authors.initials: J
authors.lastname: Wu