Patent · US Active

Method for preparing 2-indolinospirone compound and intermediate thereof

US11787814B2 · kind B2 · utility

1Cited by

2References

16Claims

0Family size

Assignees

ASCENTAGE PHARMA (SUZHOU) CO., LTD. · CN
ASCENTAGE PHARMA GROUP CORP LIMITED · CN

Inventors

Ming Guo · Suzhou, CN
Jianfeng Wen · Suzhou, CN
Jianpeng Feng · Suzhou, CN
Tianzhu Wu · Suzhou, CN
Huirong Lu · Suzhou, CN

Key dates

Filing date	Jul 10, 2020
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Nov 29, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2602/44
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Disclosed is a method for preparing 2-indolinospirone compound and intermediate thereof, specifically disclosed is a method for preparing a compound of formula 5. The method is relatively simple and has high stereoselectivity and yield.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.