作者:Guisheng Li、Zhulin Tan、Yibo Xu、Kanwar P. S. Sidhu、Bo Qu、Melissa A. Herbage、Magnus C. Eriksson、Xingzhong Zeng、Carl A. Busacca、Jean-Nicolas Desrosiers、Thomas Hampel、Oliver Niemeier、Carsten Reichel、Mai Thi Quynh Dang、Marvin Schoerer、Dirk Kemmer、Melanie Eick、Holger Werle、Soojin Kim、Zhibin Li、Shankar Venkatraman、Lanqi Jia、David A. Claremon、Klaus Fuchs、Niklas Heine、Denis Byrne、Bikshandarkoil Narayanan、Max Sarvestani、Joe Johnson、Ajith Premasiri、Larry J. Nummy、Jon C. Lorenz、Nizar Haddad、Nina C. Gonnella、Scott Pennino、Mariusz Krawiec、Chris H. Senanayake、Frederic Buono、Heewon Lee、Azad Hossain、Jinhua J. Song、Jonathan T. Reeves
DOI:10.1021/acs.oprd.2c00325
日期:2022.12.16
to overcome safety and scalability problems with existing procedures. The sterically hindered quaternary, neopentyl stereocenter was formed in high diastereoselectivity by the addition of a carbamoyl anion to an N-sulfinyl ketimine. An aryl nitrile was installed by a palladium- and cyanide-free electrophilic cyanation affected by transnitrilation of an arylmagnesium derivative with dimethylmalononitrile
描述了两种β位淀粉样蛋白前体蛋白裂解酶 (BACE) 抑制剂的大规模合成的发展。发现了新的方法来克服现有程序的安全性和可扩展性问题。通过将氨基甲酰基阴离子添加到N-亚磺酰基酮亚胺,以高非对映选择性形成空间位阻季新戊基立构中心。芳基腈是通过不含钯和氰化物的亲电氰化反应安装的,该氰化反应受芳基镁衍生物与二甲基丙二腈的转腈作用影响。基于丙二酸二乙酯和二苄胺起始原料,设计了一条通往氧杂环丁基甲基胺侧链的安全路线。开发了一种温和的烯胺氟化反应,用于合成氟代异丁胺侧链。