The crystal and molecular structure of |2‐keto‐|7‐deoxo‐8‐azacstrone methyl ether hydrohromide

The crystal and molecular structure of 12‐keto‐17‐deoxo‐8‐azaeslrone methyl ether hydro‐bromide (C 18 H 24 BrNO 2 ) has been determined by a single crystal, x‐ray diffraction study. The compound crystallizes in the monoclinie space group P2 1 /n with unit cell constants a = 12.024 (2), b = 10.340 (1), c = 14.269 Å (2), β = 104.12° (1). The structure was solved by the heavy atom method and refined by block‐diagonal least‐squares to a final R‐value = 0.03 6 for the 8.35 independently measured, statistically significant reflections. All hydrogen atoms, including methyl hydrogens, were located.