Thiomorpholine is a nitrogen- and sulfur-containing heterocyclic compound with the molecular formula C4H9NS. It can be considered a thio analog of morpholine. Thiomorpholines are comparable to other secondary amines in terms of nucleophilicity and N-alkylation or acylation with alkyl groups or acid halides.
The use of azepane as a scaffold for drug discovery remains of interest. The azepane linker is the key to efficient activity. A number of seven-membered ring derivatives have been prepared or investigated for their potential or actual pharmacological properties. Examples include azaalkane derivatives as PKB (protein kinase B) inhibitors.