US 12,018,018 B2
Pregabalin lactam methylene dimer and preparation method therefor
Jinsheng Lin, Zhejiang (CN); Xiaofei Liu, Zhejiang (CN); Dan Li, Zhejiang (CN); Jing Wang, Zhejiang (CN); Yue Li, Zhejiang (CN); Wenquan Zhu, Zhejiang (CN); Wenbin Chen, Zhejiang (CN); and Min Li, Zhejiang (CN)
Assigned to Zhejiang Huahai Pharmaceutical Co., Ltd, Zhejiang (CN); and Zhejiang Huahai Zhicheng Pharmaceutical Co., Ltd., Zhejiang (CN)
Appl. No. 17/291,237
Filed by Zhejiang Huahai Pharmaceutical Co., Ltd, Zhejiang (CN); and Zhejiang Huahai Zhicheng Pharmaceutical Co., Ltd., Zhejiang (CN)
PCT Filed Nov. 6, 2018, PCT No. PCT/CN2018/114113
§ 371(c)(1), (2) Date May 4, 2021,
PCT Pub. No. WO2020/093229, PCT Pub. Date May 14, 2020.
Prior Publication US 2021/0387971 A1, Dec. 16, 2021
Int. Cl. C07D 403/06 (2006.01)
CPC C07D 403/06 (2013.01) 15 Claims
 
1. A pregabalin lactam methylene dimer having the following structural formula:

OG Complex Work Unit Chemistry