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Details

Stereochemistry ABSOLUTE
Molecular Formula C28H50N4O7
Molecular Weight 554.7192
Optical Activity UNSPECIFIED
Defined Stereocenters 8 / 8
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of EPOXOMICIN

SMILES

CC[C@H](C)[C@H](NC(=O)[C@H]([C@@H](C)CC)N(C)C(C)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(C)C)C(=O)[C@@]1(C)CO1

InChI

InChIKey=DOGIDQKFVLKMLQ-JTHVHQAWSA-N
InChI=1S/C28H50N4O7/c1-11-16(5)21(30-27(38)23(17(6)12-2)32(10)19(8)34)25(36)31-22(18(7)33)26(37)29-20(13-15(3)4)24(35)28(9)14-39-28/h15-18,20-23,33H,11-14H2,1-10H3,(H,29,37)(H,30,38)(H,31,36)/t16-,17-,18+,20-,21-,22-,23-,28+/m0/s1

HIDE SMILES / InChI

Description
Curator's Comment: description was created based on several sources, including https://www.ncbi.nlm.nih.gov/pubmed/1468981 | https://www.ncbi.nlm.nih.gov/pubmed/10468620

Epoxomicin was originally isolated from the culture medium of an Actinomycetes strain based on its in vivo antitumor activity against murine B16 melanoma. Epoxomicin is a selective proteasome inhibitor with anti-inflammatory activity. Despite its promising antitumor activity, epoxomicin did not draw much attention as a potential drug lead from the pharmaceutical industry, presumably because epoxomicin has seemingly poor drug-like properties, namely the presence of a peptide backbone and the labile epoxy ketone pharmacophore. Despite its drawbacks, epoxomicin’s pharmacophore was found to provide unprecedented selectivity for the proteasome. Epoxomicin also served as a scaffold for the generation of a synthetic tetrapeptide epoxyketone with improved activity.

CNS Activity

Originator

Curator's Comment: Epoxomicin was originally isolated from the culture medium of an Actinomycetes strain based on its in vivo antitumor activity against murine B16 melanoma # Bristol-Myers Squibb

Approval Year

TargetsConditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Curative
Unknown

Approved Use

Unknown
Primary
Unknown

Approved Use

Unknown
Primary
Unknown

Approved Use

Unknown
PubMed

PubMed

TitleDatePubMed
Proteasome-independent HLA-B27 ligands arise mainly from small basic proteins.
2007-05
Extracellular proteasome in the human alveolar space: a new housekeeping enzyme?
2007-05
Apoptosis induced by proteasome inhibition in cancer cells: predominant role of the p53/PUMA pathway.
2007-03-15
Arkadia enhances Nodal/TGF-beta signaling by coupling phospho-Smad2/3 activity and turnover.
2007-03
PPARgamma inhibitors reduce tubulin protein levels by a PPARgamma, PPARdelta and proteasome-independent mechanism, resulting in cell cycle arrest, apoptosis and reduced metastasis of colorectal carcinoma cells.
2007-02-01
Turnover of StAR protein: roles for the proteasome and mitochondrial proteases.
2007-02
High-throughput bioluminescence screening of ubiquitin-proteasome pathway inhibitors from chemical and natural sources.
2007-02
[Artifitial increase of HIV-1 reverse transcriptase turnover through proteasome pathway].
2007-01-11
SIVSM/HIV-2 Vpx proteins promote retroviral escape from a proteasome-dependent restriction pathway present in human dendritic cells.
2007-01-09
Proteasomal chymotrypsin-like peptidase activity is required for essential functions of human monocyte-derived dendritic cells.
2007-01
AbetaPP-overexpression and proteasome inhibition increase alphaB-crystallin in cultured human muscle: relevance to inclusion-body myositis.
2006-12
Comparison of the neurotoxic effects of proteasomal inhibitors in primary mesencephalic cultures.
2006-12
Proteasomal regulation of cardiac hypertrophy: is demolition necessary for building?
2006-10-24
Activation of the cardiac proteasome during pressure overload promotes ventricular hypertrophy.
2006-10-24
Deubiquitinating enzyme Ubp6 functions noncatalytically to delay proteasomal degradation.
2006-10-06
Cyclic AMP delays neutrophil apoptosis via stabilization of Mcl-1.
2006-08-21
Failure of proteasome inhibitor administration to provide a model of Parkinson's disease in rats and monkeys.
2006-08
Roles of the ubiquitin/proteasome pathway in pollen tube growth with emphasis on MG132-induced alterations in ultrastructure, cytoskeleton, and cell wall components.
2006-08
Histone H2A.z is essential for cardiac myocyte hypertrophy but opposed by silent information regulator 2alpha.
2006-07-14
Plasmodia express two threonine-peptidase complexes during asexual development.
2006-07
Presenilin-dependent intramembrane cleavage of ephrin-B1.
2006-06-12
HIV-1 reverse transcriptase targeted for proteasomal degradation as a prototype vaccine against drug-resistant HIV-1.
2006-05-22
Extracellular matrix metalloproteinase inducer (CD147) confers resistance of breast cancer cells to Anoikis through inhibition of Bim.
2006-04-07
Ubiquitin-proteasome system stress sensitizes ovarian cancer to proteasome inhibitor-induced apoptosis.
2006-04-01
The involvement of immunoproteasomes in induction of MHC class I-restricted immunity targeting Toxoplasma SAG1.
2006-04
Glial cell line-derived neurotrophic factor-dependent recruitment of Ret into lipid rafts enhances signaling by partitioning Ret from proteasome-dependent degradation.
2006-03-08
Major histocompatibility complex class I restricted T-cell autoreactivity in human peripheral blood mononuclear cells.
2006-03
Proteasome inhibitor-induced apoptosis in human monocyte-derived dendritic cells.
2006-03
Histone deacetylase inhibitor, trichostatin A induces ubiquitin-dependent cyclin D1 degradation in MCF-7 breast cancer cells.
2006-02-20
Antiviral activity of proteasome inhibitors in herpes simplex virus-1 infection: role of nuclear factor-kappaB.
2006
Detection of a proteasome in Pneumocystis carinii and its modulation by specific proteasome inhibitors.
2006
Proteasome inhibitors sensitize colon carcinoma cells to TRAIL-induced apoptosis via enhanced release of Smac/DIABLO from the mitochondria.
2006
Probing protein function with small molecules.
2006
Characterization of endoplasmic reticulum-associated degradation of a protein S mutant identified in a family of quantitative protein S deficiency.
2006
Role of the cytokine-induced SH2 domain-containing protein CIS in growth hormone receptor internalization.
2005-11-11
The proteasome metabolizes peptide-mediated nonviral gene delivery systems.
2005-11
Identification of mono-ubiquitinated LDH-A in skeletal muscle cells exposed to oxidative stress.
2005-10-28
[Development of BMP-related drugs].
2005-10
Deubiquitination by proteasome is coordinated with substrate translocation for proteolysis in vivo.
2005-07-15
MAG induces regulated intramembrane proteolysis of the p75 neurotrophin receptor to inhibit neurite outgrowth.
2005-06-16
Cooperative cytotoxicity of proteasome inhibitors and tumor necrosis factor-related apoptosis-inducing ligand in chemoresistant Bcl-2-overexpressing cells.
2005-06-01
Dopaminergic neurons in rat ventral midbrain cultures undergo selective apoptosis and form inclusions, but do not up-regulate iHSP70, following proteasomal inhibition.
2005-06
Tau is not normally degraded by the proteasome.
2005-05-01
Evidence that insulin secretion influences SNAP-25 through proteasomal activation.
2005-04-15
Evidence for a protective role of Mcl-1 in proteasome inhibitor-induced apoptosis.
2005-04-15
Peroxisome proliferator-activated receptor gamma-independent ablation of cyclin D1 by thiazolidinediones and their derivatives in breast cancer cells.
2005-04
Transforming growth factor-beta differentially inhibits MyD88-dependent, but not TRAM- and TRIF-dependent, lipopolysaccharide-induced TLR4 signaling.
2005-02-18
Presentation of endogenously synthesized MHC class II-restricted epitopes by MHC class II cancer vaccines is independent of transporter associated with Ag processing and the proteasome.
2005-02-15
Development and characterization of proteasome inhibitors.
2005
Assaying degradation and deubiquitination of a ubiquitinated substrate by purified 26S proteasomes.
2005
Patents

Sample Use Guides

Epoxomicin (0.58 mg/kg daily for 6 days) potently blocks in vivo inflammation in the murine ear edema assay.
Route of Administration: Intraperitoneal
Epoxomicin (0.3∼10 nM) activated autophagy pathway in human retinal pigment epithelial cells.
Name Type Language
EPOXOMICIN
MI  
Common Name English
BU-4061T
Preferred Name English
N-ACETYL-N-METHYL-L-ISOLEUCYL-L-ISOLEUCYL-N-((1S)-3-METHYL-1-(((2R)-2-METHYL-2-OXIRANYL)CARBONYL)BUTYL)-L-THREONINAMIDE
Systematic Name English
L-THREONINAMIDE, N-ACETYL-N-METHYL-L-ISOLEUCYL-L-ISOLEUCYL-N-((1S)-3-METHYL-1-(((2R)-2-METHYL-2-OXIRANYL)CARBONYL)BUTYL)-
Systematic Name English
EPOXOMICIN [MI]
Common Name English
Code System Code Type Description
WIKIPEDIA
Epoxomicin
Created by admin on Mon Mar 31 21:05:06 GMT 2025 , Edited by admin on Mon Mar 31 21:05:06 GMT 2025
PRIMARY
EPA CompTox
DTXSID5044073
Created by admin on Mon Mar 31 21:05:06 GMT 2025 , Edited by admin on Mon Mar 31 21:05:06 GMT 2025
PRIMARY
CAS
134381-21-8
Created by admin on Mon Mar 31 21:05:06 GMT 2025 , Edited by admin on Mon Mar 31 21:05:06 GMT 2025
PRIMARY
FDA UNII
Y0900I3U8U
Created by admin on Mon Mar 31 21:05:06 GMT 2025 , Edited by admin on Mon Mar 31 21:05:06 GMT 2025
PRIMARY
MERCK INDEX
m4956
Created by admin on Mon Mar 31 21:05:06 GMT 2025 , Edited by admin on Mon Mar 31 21:05:06 GMT 2025
PRIMARY Merck Index
PUBCHEM
11226684
Created by admin on Mon Mar 31 21:05:06 GMT 2025 , Edited by admin on Mon Mar 31 21:05:06 GMT 2025
PRIMARY