Synthesis 2014; 46(22): 3047-3058
DOI: 10.1055/s-0034-1378653
paper
© Georg Thieme Verlag Stuttgart · New York

A Practical Synthesis of a Potent and Selective Diacylglycerol Acyltransferase-1 (DGAT-1) Inhibitor

Youngsook Shin
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Philippe Bergeron
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Brian M. Fox
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Frank Kayser
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Lawrence R. McGee
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Sharon McKendry
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Dustin L. McMinn
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Marc Labelle
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
,
Timothy D. Cushing*
Department of Therapeutic Discovery, Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA   Fax: +1(650)8379369   Email: tcushing@amgen.com
› Author Affiliations
Further Information

Publication History

Received: 12 June 2014

Accepted: 21 July 2014

Publication Date:
25 August 2014 (online)


Abstract

A practical synthesis of a potent, selective, and orally efficacious diacylglycerol acyltransferase-1 (DGAT-1) inhibitor, is described. This synthesis is suitable for multi-kilogram scale with high regioselectivity and stereoselectivity. The synthesis involves a Knoevenagel condensation with Meldrum’s acid followed by the stereoselective addition of phenyl cuprate, regioselective Friedel–Crafts acylation, cyclization, and a regioselective reduction through an enol triflate with catalytic platinum oxide to provide the desired compound in 5.2% yield over 12 steps.

 
  • References

  • 1 Cases S, Smith SJ, Zheng Y.-W, Myers HM, Lear SR, Sande E, Novak S, Collins C, Welch CB, Lusis AJ, Erickson SK, Farese RV. Jr. Proc. Natl. Acad. Sci. U.S.A. 1998; 95: 13018
    • 5a Fox BM, Furukawa N, Hao X, Iio K, Inaba T, Jackson SM, Kayser F, Labelle M, Li K, Matsui T, McMinn DL, Ogawa N, Rubenstein SM, Sagawa S, Sugimoto K, Suzuki M, Tanaka M, Ye G, Yoshida A, Zhang J. Patent WO2004047755 A2, 20031121, 2004
    • 5b Fox BM, Sugimoto K, Iio K, Yoshida A, Zhang J, Li K, Hao X, Labelle M, Smith M.-L, Rubenstein SM, Ye G, McMinn D, Jackson S, Choi R, Shan B, Ma J, Miao S, Matsui T, Ogawa N, Suzuki M, Kobayashi A, Ozeki H, Okuma C, Ishii Y, Tomimoto D, Furakawa N, Tanaka M, Matsushita M, Takahashi M, Inaba T, Sagawa S, Kayser F. J. Med. Chem. 2014; 57: 3464
  • 6 Li K, Fox BM, Zhang J, Iio K, Suzuki M, Soichiro I, Ozeki H, Kobayashi A, Ma J, Hao A, Labelle M, McMinn D, Smith M, Sagawa S, Furukawa N, Inaba T, Matsushita M, Matsui T, Ogawa N, Okuma C, Sugimoto K, Tanaka M, Yoshida A, Ishii Y, Tomimoto D, Jackson S, Choi R, Shan B, Srivastava A, Kayser F. Abstracts of Papers, 245th ACS National Meeting & Exposition, New Orleans, April 7–11, 2013. American Chemical Society; Washington DC: 2013: MEDI-410
  • 7 Davis AP, Egan TJ, Orchard MG, Cunningham D, McArdle P. Tetrahedron 1992; 48: 8725
  • 9 Jones G. Org. React. 1967; 15: 204
  • 10 Castro J, Moyano A, Pericas MA, Riera A, Greene AE, Alvarez-Larena A, Piniella JF. J. Org. Chem. 1996; 61: 9016
  • 11 Haslego ML, Smith FX. Synth. Commun. 1980; 10: 421
  • 12 Lipshutz BH, Sengupta S. Org. React. 1992; 41: 135
  • 13 Layer RW, MacGregor IR. J. Org. Chem. 1956; 21: 1120