title: (1R,4'S)-4-(tert-Butyl-dimethyl-silan-oxy)-1-[2,2-dimethyl-3-(p-tolyl-sulfon-yl)-1,3-oxazolidin-4-yl]but-2-yn-1-ol.
abstract: The chiral title compound, C(22)H(35)NO(5)SSi, is a precursor of novel furan-omycin derivatives. It crystallizes with two molecules in the asymmetric unit; these show different conformations of the silyl substitutent, as indicated by the Si-O-C-C torsion angles of 41.4 (7) and -84.5 (5)° in the two mol-ecules. The anti configuration of the adjacent stereogenic centers is consistent with the Felkin-Anh model. Each of the two crystallographically independent mol-ecules is connected with a neighbouring mol-ecule of the same type via two symmetry-equivalent O-H⋯O hydrogen bonds.
authors.affiliation: Fachbereich Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany.
authors.forename: Jörg
authors.initials: J
authors.lastname: Erdsack
authors.forename: Markus
authors.initials: M
authors.lastname: Schürmann
authors.forename: Hans
authors.initials: H
authors.lastname: Preut
authors.forename: Norbert
authors.initials: N
authors.lastname: Krause