| 摘要 |
<p>The compounds of formula (I) wherein the substituents have various significances, posses pharmacological, particularly antiinflammatory and immunosuppressant activity. They can be prepared by one or more of the follwing process variants: reduction, deprotection, acylation, reaction with N,N'-carbonyl- or N,N'-thiocarbonyldiimidazole, halogenation, splitting off of hydrogen halide, reaction with a hydrogen carbonate, radical deoxygenation, dehydration or reaction with diazomethane or -ethane, optionally under transient protection of reactive groups which it is not desired to react.</p> |
