| Stereochemistry | ABSOLUTE |
| Molecular Formula | C28H35NO4 |
| Molecular Weight | 449.5818 |
| Optical Activity | UNSPECIFIED |
| Defined Stereocenters | 5 / 5 |
| E/Z Centers | 1 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
[H][C@@]12CC[C@](COC)(OC)[C@@]1(C)C[C@H](C3=CC=C(\C=N\O)C=C3)C4=C5CCC(=O)C=C5CC[C@@]24[H]
InChI
InChIKey=GJMNAFGEUJBOCE-MEQIQULJSA-N
InChI=1S/C28H35NO4/c1-27-15-24(19-6-4-18(5-7-19)16-29-31)26-22-11-9-21(30)14-20(22)8-10-23(26)25(27)12-13-28(27,33-3)17-32-2/h4-7,14,16,23-25,31H,8-13,15,17H2,1-3H3/b29-16+/t23-,24+,25-,27-,28+/m0/s1
| Molecular Formula | C28H35NO4 |
| Molecular Weight | 449.5818 |
| Charge | 0 |
| Count |
MOL RATIO
1 MOL RATIO (average) |
| Stereochemistry | ABSOLUTE |
| Additional Stereochemistry | No |
| Defined Stereocenters | 5 / 5 |
| E/Z Centers | 1 |
| Optical Activity | UNSPECIFIED |
Asoprisnil (J867) is a novel selective steroid receptor modulator that shows unique pharmacodynamic effects in animal models and humans. Asoprisnil, its major metabolite J912, and other structurally related compounds represent a new class of progesterone receptor (PR) ligands that exhibit partial agonist and antagonist activities in vivo. Asoprisnil demonstrates a high degree of receptor and tissue selectivity, with a high-binding affinity for PR, moderate affinity for glucocorticoid receptor (GR), low affinity for androgen receptor (AR), and no binding affinity for estrogen or mineralocorticoid receptors. This compound was recently in clinical trials for the treatment of uterine fibroids and endometriosis, but those studies were discontinued.
Originator
Approval Year
Doses
AEs
Sourcing
PubMed
Sample Use Guides
It was represented the crystal structures of progesterone receptor (PR) ligand binding domain complexed with asoprisnil. Asoprisnil demonstrated antagonism, but not agonism, in a progesterone receptor (PR)-B transfection assay and the T47D breast cancer cell alkaline phosphatase activity assay. Asoprisnil, but not RU486, weakly recruited the coactivators SRC-1 and AIB1. However, asoprisnil strongly recruited the corepressor NCoR in a manner similar to RU486. Unlike RU486, NCoR binding to asoprisnil-bound PR could be displaced with equal affinity by NCoR or TIF2 peptides. In rat leiomyoma ELT3 cells, asoprisnil demonstrated partial P4-like inhibition of cyclooxygenase (COX) enzymatic activity and COX-2 gene expression. In the rat uterotrophic assay, asoprisnil demonstrated no P4-like ability to oppose estrogen.
