| Identification | Back Directory | [Name]
2-(3,5-Dichlorophenyl)-6-benzoxazole carboxylic acid | [CAS]
594839-88-0 | [Synonyms]
Fx 1006
Fx1006A
Fx-1006A
Fx 1006A
TafaMidis
Tafamidis(Fx 1006)
Tafamidis (Fx1006A)
Tafamidis free acid
PF-06291826(Tafamidis)
FX-1006A;FX1006A;FX 1006A
2-(3,5-Dichlorophenyl)-6-benzoxazole carboxylic acid
6-Benzoxazolecarboxylic acid, 2-(3,5-dichlorophenyl)-
Tafamidis free acid, 2-(3,5-dichlorophenyl)-6-benzoxazole carboxylic acid | [Molecular Formula]
C14H7Cl2NO3 | [MDL Number]
MFCD16621109 | [MOL File]
594839-88-0.mol | [Molecular Weight]
308.12 |
| Chemical Properties | Back Directory | [Boiling point ]
486.7±40.0 °C(Predicted) | [density ]
1.530 | [storage temp. ]
-20° | [solubility ]
Soluble in DMSO (up to 20 mg/ml). | [form ]
solid | [pka]
3.49±0.30(Predicted) | [color ]
Off-white | [Stability:]
Stable for 2 years from date of purchase as supplied. Solutions in DMSO may be stored at -20° for up to 3 months. | [InChI]
InChI=1S/C14H7Cl2NO3/c15-9-3-8(4-10(16)6-9)13-17-11-2-1-7(14(18)19)5-12(11)20-13/h1-6H,(H,18,19) | [InChIKey]
TXEIIPDJKFWEEC-UHFFFAOYSA-N | [SMILES]
O1C2=CC(C(O)=O)=CC=C2N=C1C1=CC(Cl)=CC(Cl)=C1 |
| Hazard Information | Back Directory | [Description]
Tafamidis is a kinetic stabilizer of transthyretin (TTR) that prevents amyloidogenesis by wild-type and mutant TTRs.1 It binds to TTR with negative cooperativity (Kd1 = 3 nM; Kd2 = 278 nM) to stabilize the TTR dimer-dimer interface and inhibit tetrameric dissociation. Tafamidis stabilizes wild-type and clinically significant V30M and V122I mutant TTR amyloidogenic homotetramers (EC50s = 2.7-3.2 μM) under fibril-promoting, denaturing, and physiological conditions in vitro. It stabilizes TTR heterotetramers containing wild-type and mutant subunits ex vivo in human plasma derived from patients carrying V30M or V1221 mutations when used at a concentration of 7.2 μM. Formulations containing tafamidis have been used for the treatment of familial amyloid polyneuropathy.2 | [Uses]
Tafamidis can be used as a benzoxole derivative that is a transthyretin (TTR) amyloid fibril inhibitors. It is a new drug candidate in the treatment of TTR amyloidosis (caused my misfolding of proteins).
| [Definition]
ChEBI: A member of the class of 1,3-benzoxazoles that is 1,3-benzoxazole-6-carboxylic acid in which the hydrogen at position 2 is replaced by a 3,5-dichlorophenyl group. Used (as its meglumine salt) for the amelioration of transthyretin-related hereditary amyloid
sis. | [Synthesis]
The synthesis of 2-(3,5-Dichlorophenyl)-6-benzoxazole carboxylic acid is as follows:
methyl 2-(3,5-dichlorophenyl)benzo[d]oxazole-6-carboxylate (17.9 mmol) was dissolved in a mixture of THF:MeOH:H2O (3:1:1, 50 mL) and treated with LiOH (71.6 mmol) at room temperature for 6h. The mixture was acidified to pH 2 with 1 N HCl and extracted with EA. The combined organic layers were dried over MgSO4, filtered and concentrated to give the product as a white solid 5.0 g, yield 91%.
 | [References]
1) Bulawa?et al.?(2012),?Tafamidis, a potent and selective transthyretin kinetic stabilizer that inhibits amyloid cascade; Proc. Natl. Acad. Sci. USA,?109?9629
2) Scott (2014),?Tafamidis: a review of its use in familial amyloid polyneuropathy; Drugs,?74?1371
3) Zhao?et al.?(2019),?Tafamidis, a Noninvasive Therapy for Delaying Transthyretin Familial Amyloid Polyneuropathy: Systemic Review and Meta-analysis; J. Clin. Neurol.,?15?108
4) Lorenzini and Elliott (2019),?Tafamidis for the treatment of transthyretin amyloidosis; Future Cardiol.,?15?53 |
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