U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

Details

Stereochemistry ACHIRAL
Molecular Formula C26H24N4O5
Molecular Weight 472.4926
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of LOTAMILAST

SMILES

CNC1=NC2=C(C=C(OC)C(OC)=C2)C(=N1)C3=CC(NC(=O)C4=CC=C(C=C4)C(=O)OC)=CC=C3

InChI

InChIKey=BBTFKAOFCSOZMB-UHFFFAOYSA-N
InChI=1S/C26H24N4O5/c1-27-26-29-20-14-22(34-3)21(33-2)13-19(20)23(30-26)17-6-5-7-18(12-17)28-24(31)15-8-10-16(11-9-15)25(32)35-4/h5-14H,1-4H3,(H,28,31)(H,27,29,30)

HIDE SMILES / InChI

Molecular Formula C26H24N4O5
Molecular Weight 472.4926
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE

E-6005 is a novel PDE4 inhibitor developed as a topical agent for atopic dermatitis (AD). It potently and selectively inhibited human PDE4 activity and suppressed the production of various cytokines from human lymphocytes and monocytes. In mice models, the topical application of E6005 produced an immediate antipruritic effect as well as an anti-inflammatory effect with reduced expression of cytokines/adhesion molecules. E-6005 increases the cutaneous concentration of cAMP to relieve dermatitis-associated itching. E-6005 may be a promising novel therapeutic agent with antipruritic activity for the treatment of AD. E-6005 is currently in phase 2 development for patients with mild-to-moderate atopic dermatitis.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
2.8 nM [IC50]
PubMed

PubMed

TitleDatePubMed
Pharmacokinetic disposition of topical phosphodiesterase-4 inhibitor E6005 in patients with atopic dermatitis.
2019-08
A dried blood spot assay with UPLC-MS/MS for the simultaneous determination of E6005, a phosphodiesterase 4 inhibitor, and its metabolite in human blood.
2018-08-05
Topical E6005/RVT-501, a novel phosphodiesterase 4 inhibitor, for the treatment of atopic dermatitis.
2017-12
Efficacy of a novel phosphodiesterase inhibitor, E6005, in patients with atopic dermatitis: An investigator-blinded, vehicle-controlled study.
2016-10
Effect of topical phosphodiesterase 4 inhibitor E6005 on Japanese children with atopic dermatitis: Results from a randomized, vehicle-controlled exploratory trial.
2016-08
Safety, tolerability and pharmacokinetics of a novel phosphodiesterase inhibitor, E6005 ointment, in healthy volunteers and in patients with atopic dermatitis.
2016
An inhaled phosphodiesterase 4 inhibitor E6005 suppresses pulmonary inflammation in mice.
2015-12-05
Validation of a UPLC-MS/MS method for the simultaneous determination of E6005, a phosphodiesterase 4 inhibitor, and its metabolite in human plasma.
2015-08-15
A putative antipruritic mechanism of the phosphodiesterase-4 inhibitor E6005 by attenuating capsaicin-induced depolarization of C-fibre nerves.
2015-03
Hematocrit-independent recovery is a key for bioanalysis using volumetric absorptive microsampling devices, Mitra™.
2015
Antipruritic mechanisms of topical E6005, a phosphodiesterase 4 inhibitor: inhibition of responses to proteinase-activated receptor 2 stimulation mediated by increase in intracellular cyclic AMP.
2014-12
Effect of the phosphodiesterase 4 inhibitor E6005 on nerve growth factor elevation in irritated skin of NC/Nga mice.
2014-12
Safety and efficacy of topical E6005, a phosphodiesterase 4 inhibitor, in Japanese adult patients with atopic dermatitis: results of a randomized, vehicle-controlled, multicenter clinical trial.
2014-07
Topical E6005, a novel phosphodiesterase 4 inhibitor, attenuates spontaneous itch-related responses in mice with chronic atopy-like dermatitis.
2014-05
Antipruritic effect of the topical phosphodiesterase 4 inhibitor E6005 ameliorates skin lesions in a mouse atopic dermatitis model.
2013-07
Patents
Substance Class Chemical
Created
by admin
on Mon Mar 31 22:01:32 GMT 2025
Edited
by admin
on Mon Mar 31 22:01:32 GMT 2025
Record UNII
TO043KKB9C
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
E6005
Preferred Name English
LOTAMILAST
INN   USAN  
Official Name English
(METHYL 4-(((3-(6,7-DIMETHOXY-2-(METHYLAMINO)QUINAZOLIN-4-YL)PHENYL(AMINO)CARBONYL)BENZOATE
Common Name English
RVT-501
Code English
BENZOIC ACID, 4-(((3-(6,7-DIMETHOXY-2-(METHYLAMINO)-4-QUINAZOLINYL)PHENYL)AMINO)CARBONYL)-, METHYL ESTER
Systematic Name English
E-6005
Common Name English
lotamilast [INN]
Common Name English
LOTAMILAST [USAN]
Common Name English
Lotamilast [WHO-DD]
Common Name English
Code System Code Type Description
USAN
DE-133
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
SMS_ID
100000181118
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
NCI_THESAURUS
C170131
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
DRUG BANK
DB12776
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
FDA UNII
TO043KKB9C
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
PUBCHEM
24864553
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
INN
10718
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
CAS
947620-48-6
Created by admin on Mon Mar 31 22:01:32 GMT 2025 , Edited by admin on Mon Mar 31 22:01:32 GMT 2025
PRIMARY
Related Record Type Details
TARGET -> INHIBITOR
IC50
Related Record Type Details
ACTIVE MOIETY