Amino acid derivatives
US5304549A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/65583
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula ##STR1## wherein A is the group ##STR2## R.sup.1 is hydrogen, amino, protected amino, acylamino or lower alkyl optionally substituted by aryl, hydroxy, protected hydroxy, amino, protected amino, acylamino, maleimido, succinimido, naphthalimido, 2,3-dihydro-1,3-dioxo-1H-benz[d,e]isoquinol-2-yl, carboxy, protected carboxy, carbamoyl, mono(lower alkyl)carbamoyl, di(lower alkyl)carbamoyl, di(lower alkyl)amino, carboxy-lower alkanoylamino, pyrrolidino or morpholino; R.sup.2 is hydrogen or lower alkyl optionally substituted by aryl, amino, protected amino, di(lower alkyl)- amino, guanidino, carboxyl, protected carboxyl, carbamoyl, mono(lower alkyl) carbamoyl, di(lower alkyl)carbamoyl, di(lower alkoxy)phosphinyl, dihydroxyphosphinyl, pyrrolidino, piperidino or morpholino; R.sup.3 is hydrogen or lower alkyl optionally substituted by hydroxy, protected hydroxy, amino or protected amino; R.sup.4 is hydrogen, hydroxy, lower alkoxy or benzyloxy; and R.sup.5 is hydrogen or halogen and their pharmaceutically acceptable salts, which are useful for the control or prevention of degenerative joint diseases or for the treatment of invasive tumors, atherosclerosis or multiple …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.