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- W1960032014 abstract "The structure of 3β-acetoxy-7α,11α-dibromolanostane-8α,9α-epoxide, the dibromo-derivative of an intermediate in an attempted removal of the 14α-methyl group of 3β-acetoxylanost-8-ene, has been determined by X-ray analysis. Crystals of the derivative, C32H52O3Br2, are orthorhombic, a= 26·035, b= 9·895, c= 12·268Å, Z= 4, space group P212121. The intensities of 2236 reflexions were measured using Cu-Kα radiation. The two bromine positions were determined by Patterson methods and all carbon and oxygen atoms were located on three successive three-dimensional electron-density distributions. Positional and isotropic temperature parameters were refined by four cycles of least-squares; a further six cycles of anisotropic least-squares completed the refinement, giving a final R value of 13·3%. The absolute configuration was determined by the anomalous dispersion method." @default.
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- W1960032014 date "1966-01-01" @default.
- W1960032014 modified "2023-10-18" @default.
- W1960032014 title "The crystal and molecular structure of 3β-acetoxy-7α,11α,-dibromolanostane-8α,9α-epoxide" @default.
- W1960032014 doi "https://doi.org/10.1039/j29660000174" @default.
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