专利号:US-12006291-B2 优先权日:2022-01-11 标 题 :Processes for the preparation of 4,6,7-trifluoro-1H-indole-2-carboxylic acid 发明人:ZHU KAICHENG; WANG TAO; ZHANG JIAJUN; CAO HUI; SHEN RUICHAO; WANG GUOQIANG; WU GEORGE G; OR YAT SUN 权利人:ENANTA PHARM INC 摘要:The present invention relates to processes for preparing a Compound (1): n nor a pharmaceutically acceptable salt or solvate thereof. Compound (1) is useful as in many pharmaceutical agents, especially is useful as key intermediate in the synthesis of certain SARS-CoV-2 3CLpro inhibitors.