There are disclosed compounds of the formula I:
1
or a pharmaceutically acceptable salt of the compound, which exhibit anti-inflammatory and immunomodulatory activity. Also disclosed are pharmaceutical compositions containing said compounds.
An efficient metal-freesulfenylation of indoles with disulfides has been developed, leading to 3-arylthioindoles in moderate to excellent yields. Furthermore, bromosulfenylation of indoles with disulfides has been realized for the first time providing a new family of 2-bromo-3-arylthioindole derivatives in good yield by the one-pot construction of CS and CBr bonds. It is noteworthy that the system
An efficient and convenient palladium-catalyzed C–H bond oxidative sulfenylation of indoles and related electron-rich heteroarenes with arylboronicacids and elementalsulfur has been described. This procedure provides a useful and direct approach for the assembly of a wide range of structurally diverse 3-sulfenylheteroarenes with moderate to excellent yields from simple and readily available starting