Modified di- and tripeptides of the C-terminal portion of oxytocin and vasopressin as possible cognition activation agents
摘要:
A number of peptides and modified peptides were synthesized and studied for their ability to reverse electroconvulsive shock-induced amnesia in rodents. A few of these peptides were selected for secondary evaluation in tests of short-term memory in rats and aged rhesus monkeys. A number of the peptides and modified peptides were active in the amnesia reversal test. In selected secondary tests, however, the chosen compounds failed to show significant activity in enhancing memory. New methods for preparing methyleneamino and methyleneoxy isosteres of peptides are reported. Other modified peptides also included methylenethio, methylenesulfonyl, and ethylene isosteres in place of the normal peptide amide bond.
N-carboxymethyl substituted benzolactams as inhibitors of matrix metalloproteinase
申请人:——
公开号:US20020095035A1
公开(公告)日:2002-07-18
The present invention provides a method of inhibiting matrix metallo-proteinases (MMPs) in a patient in need thereof comprising administering to the patient an effective matrix metalloproteinase inhibiting amount of the N-carboxymethyl substituted benzolactams of formula (1):
1
wherein A is —OH or —NRR′. Such inhibitors are useful in treating neoplasms, atherosclorosis, and chronic inflammatory diseases.
The present invention also provides novel N-carboxymethyl substituted benzolactams of formula (1a):
2
wherein A is —NRR′.
The invention is directed to compounds having the formula:
wherein: Ar, r, n, X, R
2-3
and R
5-7
are as defined in the specification, and pharmaceutically acceptable salts thereof. These compounds have AT
1
receptor antagonist activity and neprilysin inhibition activity. The invention is also directed to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.
Modified oxytocin-vasopressin di- or tri-peptides wherein an amide group is replaced by a group selected from ##STR1## --CH.sub.2 NH--, --CH.sub.2 O--, --CH.sub.2 S--, --CH.sub.2 SO--, --CH.sub.2 SO.sub.2 --, --CH.sub.2 CH.sub.2 -- and --CH.dbd.CH-- are described as well as methods for their manufacture, pharmaceutical compositions and methods for treatment, especially of cognitive disorders, depression, morphine dependency and parkinsonism by adjunctive therapy.
Small cell lung carcinoma cells (SCLC) contain gastrin releasing peptide (GRP) receptors. The response of the cells to GRP is rapid growth. We have found a group of peptide derivatives that act as GRP antagonists by blocking the binding of GRP to its receptor thereby inhibiting the growth of cells that are sensitive to the growth promoting activity of GRP.
The invention is directed to compounds having the formula:
wherein: Ar, r, n, X, R
2-3
and R
5-7
are as defined in the specification, and pharmaceutically acceptable salts thereof. These compounds have AT
1
receptor antagonist activity and neprilysin inhibition activity. The invention is also directed to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.