Crystal Structure and Synthesis of 16β-Methyl-17α-propionyloxypregna-4,6-diene-3,20-dione

抄録

C₂₅H₃₄O₄ is orthorhombic, P2₁2₁2₁. The unit-cell dimensions at 293 K are a = 7.3969(10), b = 11.0606(12), c = 27.266(3)Å, V = 2230.7(5)ų, D_x = 1.187 g/cm³, and Z = 4. The R value is R = 0.0766 for 1119 reflections. The A, B, C and D rings occur in a distorted envelope, a distorted half chair, a chair, and a half chair, respectively. The molecules in the crystal are packed at normal van der Waals distances.