Method for preparing substituted [1,4]diazepino[6,7,1-hi]indol-4-ones
US6689881B1 · kind B1 · utility
3Cited by
2References
4Claims
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Key dates
| Filing date | Apr 3, 2002 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Apr 3, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P29/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Method for the preparation of enantiomerically pure diazepino-indolone of formula which comprises the intramolecular cyclization of a product of formula where A, B, X1, X2, Z, Z1, Z2 and R are as defined in the description, in the presence of a weak Lewis acid catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.