| Stereochemistry | ABSOLUTE |
| Molecular Formula | C36H39N3O6 |
| Molecular Weight | 609.7114 |
| Optical Activity | UNSPECIFIED |
| Defined Stereocenters | 1 / 1 |
| E/Z Centers | 0 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
COC(=O)C1=C(C)NC(C)=C([C@H]1C2=CC=CC(=C2)[N+]([O-])=O)C(=O)OCCCN3CCC(CC3)(C4=CC=CC=C4)C5=CC=CC=C5
InChI
InChIKey=SVJMLYUFVDMUHP-XIFFEERXSA-N
InChI=1S/C36H39N3O6/c1-25-31(34(40)44-3)33(27-12-10-17-30(24-27)39(42)43)32(26(2)37-25)35(41)45-23-11-20-38-21-18-36(19-22-38,28-13-6-4-7-14-28)29-15-8-5-9-16-29/h4-10,12-17,24,33,37H,11,18-23H2,1-3H3/t33-/m0/s1
S-(+)-niguldipine is a more active enantiomer and is a selective antagonist for the and α1A-adrenoceptor. In addition, it can be used for discriminating of alpha 1A- from alpha 1B-adrenoceptors. There were made attempts to investigate the antidepressant action of S-(+)-niguldipine on rats, but that studies were unsuccessful.
Approval Year
PubMed
Patents
Sample Use Guides
in rats: Drug was administered at three time points (24, 5, and 1 h before testing), and the effects of three doses (2, 5, and 10 mg/kg) was investigated. S-(+)-Niguldipine produced no antidepressant-like effects other than a 14% reduction in immobility time at the highest dose.
Route of Administration:
Oral
(+)-Niguldipine (Ki: 78 nmol/l) and (-)-niguldipine (Ki: 58 nmol/l) bound with approximately equal affinity to the alpha 1-adrenoceptors ('alpha 1B') in liver cell membranes. The (+)-niguldipine alpha 1-adrenoceptor inhibition data for rat brain cortex membranes were better fitted by a two-site model. The high-affinity component ('alpha 1A') had a Ki value of 52 pmol/l in competition experiments with [3H]prazosin. The low-affinity site (alpha 1B) had 200- to 600-fold less affinity. (+)-Niguldipine was the most selective compound for discriminating alpha 1A- from alpha 1B-adrenoceptors and is a novel prototype for 1,4-DHPs which bind with nearly equal affinity to skeletal muscle and brain or heart 1,4-DHP receptors.
ACTIVE MOIETY
