作者:Scott Savage、Srinivasan Babu、Mark Zak、Zhongping Mao、Jianhua Cao、Yonghui Ge、Dongxu Ma、Guoqiang Jiang
DOI:10.1055/s-0033-1338422
日期:——
describe the development of a concise route to prepare kilogram quantities of ( S )-3-aminopyran, a key intermediate in the synthesis of a Jak1 inhibitor. The chiral amine was introduced via a chiral-pool approach and involves using inexpensive, commercially available l -glutamic acid as the key starting material. Global protection, followed by reduction afforded the N -Boc-amino diol. Intramolecular Mitsunobu
我们描述了一种简明路线的开发,以制备千克数量的 (S)-3-氨基吡喃,这是合成 Jak1 抑制剂的关键中间体。手性胺是通过手性池方法引入的,涉及使用廉价的市售 l-谷氨酸作为关键起始材料。全局保护,然后还原提供 N-Boc-氨基二醇。分子内 Mitsunobu 环化和脱保护以 30% 的总产率在四个步骤中提供所需化合物,无需使用色谱法。