Peptide, process for preparation thereof and use thereof
US4666890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1982 |
| Grant date | May 19, 1987 |
| Priority date | — |
| Expiry date | May 20, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to novel peptides of enhanced pharmacological activity of the formula: ##STR1## wherein R.sup.1 is alkanoyl; PA0 R.sup.2 and R.sup.q are each hydrogen, carboxy, protected carboxy, or a group of the formula: ##STR2## wherein R.sub.a.sup.2 is mono- or di-carboxy (or protected carboxy) lower alkyl or ar(carboxy or protected carboxy) lower alkyl whose aryl moiety may be substituted by hydroxy, PA1 R.sub.b.sup.2 is hydrogen or lower alkyl; PA0 R.sup.P is hydrogen, carboxy, protected carboxy, with proviso that when one of R.sup.2 and R.sup.q is hydrogen, then the other is carboxy or protected carboxy or a group of the formula: ##STR3## wherein R.sub.a.sup.2 and R.sub.b.sup.2 are each as defined above; R.sup.r is hydrogen or amino protective group; PA1 m is an integer 1 to 3; PA1 or its pharmaceutically acceptable salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.