作者: Gong, Wanben ; Li, Yuanqiang ; Wu, Quanbing ; Zhao, Yi ; Fu, Peng ; Wang, Xianwen ; Villa, Marco ; Cheung, Chi Ming ; Zhou, Jianguang ; Han, Yufeng ; Li, Cheng ; Fei, Zhongbo ; Guo, Jing ; Qiu, Wenlong ; Li, Lei ; Li, Jinjing ; Zhu, Wenya ; Li, Bin ; Wu, Bin
A scalable process for the novel monobactam antibiotic LYS228 (I) has been developed.This paper covers a novel scalable process for producing β-lactam II in the multiple kilogram scale.An alternative approach to compound III without protecting-group exchange has been demonstrated to enable a shortened synthesis.A scalable process for the side chain IV, which used an alternative reagent to mitigate a safety risk from the initial med-chem approach, was performed.The final assembling to LYS228, a stable isolated product, was identified and executed in the multiple kilogram scale.