Therapeutic and prophylactic agents for peptic ulcer
US5053498A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1989 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Oct 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A therapeutic and prophylactic agent for peptic ulcers which contains as an active ingredient a compound of the general formula (I): ##STR1## wherein R.sub.1 represents hydrogen or .dbd.O; R.sub.2 represents hydrogen or --OR.sub.5 ; R.sub.3 represents hydrogen or --OR.sub.5 ; R.sub.4 represents --OR.sub.7 in the case of the absence of double bond; R.sub.5, R.sub.6 and R.sub.7 each represents hydrogen or an organic residue; PA1 X represents group (A); EQU .dbd.C.dbd.CH--COR.sub.8 (A) or group (B): ##STR2## wherein R.sub.8 represents alkyl, and R.sub.9 and R.sub.10 each represents hydrogen or an organic residue; with the proviso that when X represents group (A), then R.sub.1 and R.sub.3 both represent hydrogen, R.sub.2 represents --OR.sub.5, R.sub.4 represents OR.sub.7 and the bond between the carbon atom to which X is attached and the carbon atom to which R.sub.4 is attached is a single bond, and when X represents group (B), then R.sub.1 represents .dbd.O, R.sub.2 represents hydrogen, R.sub.3 represents --OR.sub.6 and the bond between the carbon atom to which X is attached and the carbon atom to which R.sub.4 is attached is a double bond, or a pharmaceutically acceptable salt thereo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.