Contact us: +91 9550333722 040 - 40102781
Structured search
India
Choose your country
Different countries will display different contents
Try our best to find the right business for you.
My chemicalbook

Welcome back!

HomeProduct name listRamatroban

Ramatroban

Synonym(s):(+)-(3R)-3-[[(4-Fluorophenyl)sulfonyl]amino]-1,2,3,4-tetrahydro-9H-carbazole-9-propanoic acid;BAY u3405

Ramatroban Structural

What is Ramatroban?

Description

Ramatroban, originally developed for the treatment of cardiovascular pathologies as thromboembolism, was finally introduced in Japan for the treatment of allergic rhinitis. It is a (3R)-enantiomer that can be synthesized in 5 steps from 3-oxo-1,2,3,4- tetrahydrocarbazole by stereoselective reductive amination, using S-phenethylamine as the chiral source, followed by hydrogenolysis, sulfonylation and finally 2-step Ncarboxyethylation. Ramatroban is a potent antagonist of prostaglandin receptors (PGD2, PGH2) and thromboxane receptors (TxA2); accordingly, it blocks the contractions induced by thromboxane or TxA2-mimetics in animal and human airway smooth muscle. It also prevents, when administered i.v., p.o. or by aerosol, bronchoconstriction induced by PGD2 or antigen. In animal models of nasal allergy, ramatroban inhibits antigen-induced neutrophil infiltration into nasal mucosa and also inhibits nasal symptoms. In several species including humans, it is well-absorbed, extensively protein-bound (>95%) and eliminated mainly as a glucuro-conjugate; in man, its terminal half-life is 2 to 3 hours.

Chemical properties

WHite to Off-White Solid

Originator

Bayer (Germany)

The Uses of Ramatroban

A thromboxane receptor antagonist for use in the treatment of coronary artery disease.

What are the applications of Application

BAY-u 3405 is a suppresor PGD2-induced migration of human eosinophils

Definition

ChEBI: Ramatroban is an organic molecular entity.

brand name

Baynas

Biological Activity

Potent dual antagonist of TP/DP 2 (CRTH2) prostanoid receptors (K i values are 4.3, 4.5 and > 10000 nM for hDP 2 , hTP and hDP 1 receptors respectively). Suppresses PGD 2 -induced migration of human eosinophils (IC 50 = 170 nM).

in vitro

bay u3405 showed significant inhibitory effects on the binding of 3h-labeled pgd2 to crth2, albeit with much lower potency. bay u3405 and indomethacin also inhibited pgd2-induced ca2+ mobilization in crth2 transfectants to almost the same extent. however, indomethacin but not bay u3405 was confirmed as an agonist of ca2+ mobilization at concentrations greater than 10 nm [1].

in vivo

for rat with splanchnic artery occlusion shock, administration of bay u3405 at 30 mg/kg i.v. could significantly increase the survival time and survival rate, improve mean arterial blood pressure, reduce the plasma levels of myocardial depressant factor, partially restore macrophage phagocytosis and lower mpo activity in both the ileum and the lung [2].

storage

Desiccate at -20°C

References

[1] sugimoto, h. ,shichijo, m.,iino, t., et al. an orally bioavailable small molecule antagonist of crth2, ramatroban (bay u3405), inhibits prostaglandin d2-induced eosinophil migration in vitro. journal of pharmacology and experimental therapeutics 305, 347-352 (2003).
[2] canale p, squadrito f, altavilla d, ioculano m, campo gm, squadrito g, urna g, sardella a, caputi ap. beneficial effects of bay u3405, a novel thromboxane a2 receptor antagonist, in splanchnic artery occlusion shock. pharmacology. 1994 dec;49(6):376-85.
[3] aizawa h, shigyo m, nogami h, hirose t, hara n. bay u3405, a thromboxane a2 antagonist, reduces bronchial hyperresponsiveness in asthmatics. chest. 1996 feb;109(2):338-42.

Properties of Ramatroban

Melting point: 134-135°
Boiling point: 654.7±65.0 °C(Predicted)
alpha  D +70.1° (c = 1.0 in methanol)
Density  1.43±0.1 g/cm3(Predicted)
storage temp.  Sealed in dry,2-8°C
solubility  DMSO: ≥40mg/mL
form  solid
pka 4.60±0.10(Predicted)
color  white
CAS DataBase Reference 116649-85-5(CAS DataBase Reference)

Safety information for Ramatroban

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P271:Use only outdoors or in a well-ventilated area.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Ramatroban

Related products of tetrahydrofuran

You may like

Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.