Discovery of a New Class of Macrocyclic Antagonists to the Human Motilin Receptor
摘要:
A novel class of macrocyclic peptidomimetics was identified and optimized as potent antagonists to the human motilin receptor (hMOT-R). Well-defined structure-activity relationships allowed for rapid optimization of potency that eventually led to high affinity antagonists to hMOT-R. Potency and antagonist functional activity were confirmed both in functional and cell-based assays, as well as on isolated rabbit intestinal smooth muscle strips. Rapid access to this novel class of macrocyclic target structures was made possible through two efficient and complementary solid-phase parallel synthetic approaches, both of which are reported herein.
Natural products have long been important inspirations for the development of chemical methodologies, theories, and technologies, and ultimately, discoveries of new drugs and materials. Chemical syntheses have traditionally yielded individual or small groups of natural products; however, methodology development allowing the synthesis of a large collection of natural products remains scarce. Here, we
Regioselective Hydroformylation of Sulfonamides using a Scaffolding Ligand
作者:Amanda D. Worthy、Moriah M. Gagnon、Michael T. Dombrowski、Kian L. Tan
DOI:10.1021/ol900921e
日期:2009.7.2
A highly regioselective hydroformylation of allylic sulfonamides has been developed by employing a catalyticdirectinggroup. The reaction tolerates a wide range of electronically and sterically modified olefins, and only 10% of the scaffolding ligand is required to effectively control the regioselectivity.