Merck
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  • Discovery of 6alpha-ethyl-23(S)-methylcholic acid (S-EMCA, INT-777) as a potent and selective agonist for the TGR5 receptor, a novel target for diabesity.

Discovery of 6alpha-ethyl-23(S)-methylcholic acid (S-EMCA, INT-777) as a potent and selective agonist for the TGR5 receptor, a novel target for diabesity.

Journal of medicinal chemistry (2009-12-18)
Roberto Pellicciari, Antimo Gioiello, Antonio Macchiarulo, Charles Thomas, Emiliano Rosatelli, Benedetto Natalini, Roccaldo Sardella, Mark Pruzanski, Aldo Roda, Elisabetta Pastorini, Kristina Schoonjans, Johan Auwerx
ABSTRACT

In the framework of the design and development of TGR5 agonists, we reported that the introduction of a C(23)(S)-methyl group in the side chain of bile acids such as chenodeoxycholic acid (CDCA) and 6-ethylchenodeoxycholic acid (6-ECDCA, INT-747) affords selectivity for TGR5. Herein we report further lead optimization efforts that have led to the discovery of 6alpha-ethyl-23(S)-methylcholic acid (S-EMCA, INT-777) as a novel potent and selective TGR5 agonist with remarkable in vivo activity.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Chenodeoxycholic acid
Sigma-Aldrich
Cholic acid, from bovine and/or ovine, ≥98%