title: (3R,4S,5R)-Methyl 3,5-bis-[(tert-butyl-dimethyl-sil-yl)-oxy]-4-meth-oxy-cyclo-hex-1-ene-carboxyl-ate.
abstract: The title compound, C21H42O5Si2, was synthesized from (3R,4S,5R)-methyl 3,5-bis-[(tert-butyl-dimethyl-sil-yl)-oxy]-4-hy-droxy-cyclo-hex-1-ene-carboxyl-ate by an esterification reaction. The cyclo-hexene ring adopts a half-chair conformation. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds, forming helical chains propagating along [010].
authors.affiliation: School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, People's Republic of China.
authors.forename: Ri
authors.initials: R
authors.lastname: Liu
authors.forename: Yu
authors.initials: Y
authors.lastname: Shi
authors.forename: Chun-Xiu
authors.initials: CX
authors.lastname: Xu
authors.forename: Yi-Liang
authors.initials: YL
authors.lastname: Li