Dihydroetorphines and their preparation
- 专利权人:
- EURO-CELTIQUE S.A.
- 发明人:
- Steve Whitelock,Deborah Phyllis Harding,Carl David Turner
- 申请号：
- US14473751
- 公开号：
- US09206190B2
- 申请日:
- 2014.08.29
- 申请国别(地区):
- US
- 年份:
- 2015
- 代理人:
- 摘要：
- The present invention provides a process for the preparation of a compound of formula (VI), or a salt or derivative thereof,wherein R1 and R2 are independently C1-8 alkyl and * represents a stereocentre.
- 来源网站：
- 中国工程科技知识中心
