different stereo-chemical orientations at C-11 on the two-dimensional arrangement of molecules and solid-state properties. All the molecules associate only via weak intermolecular interactions in their crystal structures, notable one being the Halogen Bonded assembly (C–Br…O) in 5 .
                                    摘要 3α,7α-diacetoxy-12-oxo-5β-cholan-24-oate 2 , 11α-bromo-3α,7α-diacetoxy-12-oxo-5β-cholan-24-oate 3 , 11β-bromo-合成了 3α,7α-diacetoxy-12-oxo-5β-cholan-24-oate 4 和 11,11-dibromo-3α,7α-diacetoxy-12-oxo-5β-cholan-24-oate 5。解析这些分子的晶体结构以研究C-11处具有不同立体
化学取向的
胆酸类
固醇骨架中庞大的
溴原子对分子二维排列和固态性质的影响。所有分子仅通过其晶体结构中的弱分子间相互作用结合,值得注意的是 5 中的卤素键合组装 (C-Br…O)。