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Article Abstract
The title compound, C(21)H(33)BrO(3), an inter-mediate in the synthesis of the neuromuscular blocking agent rocuronium bromide, contains two independent mol-ecules in the asymmetric unit, which have almost identical geometries: in both mol-ecules, the steroidal rings A, B and C have slightly flattened chair conformations and ring D assumes a half-chair conformation. In the crystal, O-H⋯O hydrogen bonds and weak C-H⋯O and C-H⋯Br inter-actions help to establish the packing.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2983941 | PMC |
| http://dx.doi.org/10.1107/S1600536810007555 | DOI Listing |
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