A Potent and Orally Efficacious, Hydroxyethylamine-Based Inhibitor of β-Secretase
摘要:
beta-Secretase inhibitors are potentially disease-modifying treatments for Alzheimer's disease. Previous efforts in our laboratory have resulted in hydroxyethylamine-derived inhibitors such as 1 with low nanomolar potency against beta-site amyloid precursor protein cleaving enzyme (BACE). When dosed intravenously, compound 1 was also shown to significantly reduce A beta(40) levels in plasma, brain, and cerebral spinal fluid. Herein, we report further optimizations that led to the discovery of inhibitor 16 as a novel, potent, and orally efficacious BACE inhibitor.
Stereoselective Synthesis ofanti-N-Protected 3-Amino-1,2-epoxides by Nucleophilic Addition toN-tert-Butanesulfinyl Imine of a Glyceraldehyde Synthon†
摘要:
A di-O-TBS protected glyceraldellyde synthon was condensed with Ellman's reagent to form a bench-stable N-tert-butanesulfinyl imine 6, which served as a common intermediate for the stereoselective introduction Of various R groups. The Ellman adducts were converted to useful Multifunctional intermediates 18a-i in one pot. The alcohols 18a-i were efficiently elaborated to both known and novel anti-N-protected-3-amino-1,2-epoxides in two steps. Compound 2a is a key intermediate toward HIV protease inhibitors.
Stereoselective Synthesis of<i>anti</i>-<i>N</i>-Protected 3-Amino-1,2-epoxides by Nucleophilic Addition to<i>N</i>-<i>tert</i>-Butanesulfinyl Imine of a Glyceraldehyde Synthon<sup>†</sup>
作者:Scott S. Harried、Michael D. Croghan、Matthew R. Kaller、Patricia Lopez、Wenge Zhong、Randall Hungate、Paul J. Reider
DOI:10.1021/jo900643b
日期:2009.8.21
A di-O-TBS protected glyceraldellyde synthon was condensed with Ellman's reagent to form a bench-stable N-tert-butanesulfinyl imine 6, which served as a common intermediate for the stereoselective introduction Of various R groups. The Ellman adducts were converted to useful Multifunctional intermediates 18a-i in one pot. The alcohols 18a-i were efficiently elaborated to both known and novel anti-N-protected-3-amino-1,2-epoxides in two steps. Compound 2a is a key intermediate toward HIV protease inhibitors.
A Potent and Orally Efficacious, Hydroxyethylamine-Based Inhibitor of β-Secretase
作者:Matthew R. Kaller、Scott S. Harried、Brian Albrecht、Patricia Amarante、Safura Babu-Khan、Michael D. Bartberger、James Brown、Ryan Brown、Kui Chen、Yuan Cheng、Martin Citron、Michael D. Croghan、Russell Graceffa、Dean Hickman、Ted Judd、Chuck Kriemen、Daniel La、Vivian Li、Patricia Lopez、Yi Luo、Craig Masse、Holger Monenschein、Thomas Nguyen、Lewis D. Pennington、Tisha San Miguel、E. Allen Sickmier、Robert C. Wahl、Matthew M. Weiss、Paul H. Wen、Toni Williamson、Stephen Wood、May Xue、Bryant Yang、Jianhua Zhang、Vinod Patel、Wenge Zhong、Stephen Hitchcock
DOI:10.1021/ml3000148
日期:2012.11.8
beta-Secretase inhibitors are potentially disease-modifying treatments for Alzheimer's disease. Previous efforts in our laboratory have resulted in hydroxyethylamine-derived inhibitors such as 1 with low nanomolar potency against beta-site amyloid precursor protein cleaving enzyme (BACE). When dosed intravenously, compound 1 was also shown to significantly reduce A beta(40) levels in plasma, brain, and cerebral spinal fluid. Herein, we report further optimizations that led to the discovery of inhibitor 16 as a novel, potent, and orally efficacious BACE inhibitor.