Processes for producing pyridoindole derivatives
US6013653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1998 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Apr 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing pyridiondole derivatives represented by general formula (III) or their salts (wherein R.sup.1 represents hydrogen, lower alkyl or lower alkenyl; R.sup.2 represents hydrogen, lower alkyl or halogeno; and R.sup.3 represents optionally substituted imidazolyl), which comprises reacting a compound represented by general formula (I) or its salt (wherein R.sup.1 and R.sup.2 are each as defined above) with a compound represented by general formula (II) or its salt (wherein R.sup.3.sub.a represents optionally substituted imidazolyl having an imino protecting group; and X represents halogeno), followed by a reaction for eliminating the imino protecting group); and a process for producing optically active pyridoindole derivatives represented by general formula (IV) or their salts: which comprises reacting a racemic mixture of the pyridoindole derivative represent by formula (III) or its salt with (1R)-(-)-10-camphorsulfonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.