• Reactant for preparation of indolyl ethanones as indoleamine 2,3-dioxygenase inhibitors1 • Reactant for preparation of histamine H3 receptor inverse agonists2 • Reactant for preparation of PPAR-γ binding agents with potential application to the treatment of osteoporosis3 • Reactant for preparation of Nonpeptide glycoprotein IIB/IIIA inhibitors4