Process for preparing pyrrolo(1,2-A)azepinone derivatives
US4826974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Nov 4, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pyrrolo[1,2-a]azepinone derivatives of formula: ##STR1## in which R.sub.3 is H or halogen and either (A) R is benzyl or phenylthio in which the phenyls are optionally substituted by one or more halogens or hydroxy, alkyl, alkyloxy or alkylthio radicals, R.sub.1 and R.sub.2, which may be identical or different, denote alkyl optionally substituted by dialkylamino in which the alkyls are optionally joined to form a 1-pyrrolidinyl, piperidino, morpholino or 1-piperazinyl ring substituted by alkyl, or alternatively R.sub.1 and R.sub.2 form a heterocyclic ring chosen from pyrrolidine, piperidine, morpholine and piperazine, substituted by alkyl, alkenyl (2 to 4 C), benzyl or phenethyl optionally substituted by halogen, alkyl, alkyloxy, alkylthio, CF.sub.3, COOH, carboxyalkyl, alkyloxycarbonyl, alkyloxycarbonylalkyl, hydroxyalkyl, or alkylcarbonyloxyalkyl in which the alkylcarbonyl has 2 to 18 C, or (B) R is phenyl optionally substituted with one or more halogens or hydroxy, alkyl, alkyloxy or alkylthio radicals and R.sub.1 and R.sub.2 together form a piperazine or homopiperazine ring substituted by hydroxyalkyl (2 to 4 C), alkenyl (2 to 4 C), alkynyl (2 to 4 C), benzyl or phenethyl option…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.