114012-41-8Relevant articles and documents
Chagas Disease Drug Discovery: Multiparametric Lead Optimization against Trypanosoma cruzi in Acylaminobenzothiazole Series
Fleau, Charlotte,Padilla, Angel,Miguel-Siles, Juan,Quesada-Campos, Maria T.,Saiz-Nicolas, Isabel,Cotillo, Ignacio,Cantizani Perez, Juan,Tarleton, Rick L.,Marco, Maria,Courtemanche, Gilles
supporting information, p. 10362 - 10375 (2019/11/29)
Acylaminobenzothiazole hits were identified as potential inhibitors of Trypanosoma cruzi replication, a parasite responsible for Chagas disease. We selected compound 1 for lead optimization, aiming to improve in parallel its anti-T. cruzi activity (IC50 = 0.63 μM) and its human metabolic stability (human clearance = 9.57 mL/min/g). A total of 39 analogues of 1 were synthesized and tested in vitro. We established a multiparametric structure-activity relationship, allowing optimization of antiparasite activity, physicochemical parameters, and ADME properties. We identified compound 50 as an advanced lead with an improved anti-T. cruzi activity in vitro (IC50 = 0.079 μM) and an enhanced metabolic stability (human clearance = 0.41 mL/min/g) and opportunity for the oral route of administration. After tolerability assessment, 50 demonstrated a promising in vivo efficacy.
Preparation method of 3-oxetanecarboxylic acid
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Paragraph 0066; 0084-0086; 0108; 0130, (2018/09/12)
The invention provides a preparation method of 3-oxetanecarboxylic acid. According to the preparation method, 2-hydroxymethyl-2-nitro-1,3-propylene glycol is taken as a raw material, hydroxyl in 2-hydroxymethyl-2-nitro-1,3-propylene glycol is subjected to a group protection reaction, nitryl in 2-hydroxymethyl-2-nitro-1,3-propylene glycol is subjected to a reductive elimination reaction and hydrolysis reaction, and 2-hydroxymethyl-1,3-propylene glycol is obtained; 2-hydroxymethyl-1,3-propylene glycol is continuously subjected to a cyclization reaction and an oxidation reaction, and 3-oxetanecarboxylic acid is obtained. The provided preparation method can be completed only through five-step reactions; compared with existing preparation methods through ten-step reactions, the preparation method has the advantages that the reaction steps are greatly reduced, the reaction routes are greatly shortened, the overall yield is increased, and the final yield can be up to 50% or above on the basisof the raw material, namely, 2-hydroxymethyl-2-nitro-1,3-propylene glycol; the related reactions are simple, and the method is easy to operate and favorable for industrial production.
Process for the preparation of 2,2-bis-chloro-methylalkanecarboxylic acid chlorides
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, (2008/06/13)
A process for the preparation of a 2,2-bis-chloro-methyl-alkanecarboxylic acid of the formula STR1 in which R is hydrogen, alkyl, cycloalkyl or optionally substituted phenyl, which comprises reacting an oxetane-3-carboxylic acid of the formula STR2 or a salt thereof, with an inorganic acid chloride at a temperature between 20° C. and the boiling point of the reaction mixture. The products are known intermediates for fungicides and herbicides.