- Synthesis of dithio-, thio- and carbamoyl ester derivatives of monosaccharides and itols
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Regiospecific carbamoylation of O-isopropylidene protected monosaccharides and itols gave a large range of novel carbamoyl, thiocarbamoyl and dithiocarbamoyl esters. These fully, partially and unprotected carbohydrates possess both modulable hydrophilic character and potential biological properties. Some carbamoyl esters showed, by NMR spectroscopy, characteristics of Z-E isomerism; the rotational energy barrier was higher for the thiocarbamates than for the corresponding carbamates.
- Len, Christophe,Postel, Denis,Ronco, Gino,Villa, Pierre
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- Method for preparing substituted thiophenol and heterocyclic thiophenol by continuous flow reactor
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The invention relates to a method for preparing substituted thiophenol and heterocyclic thiophenol by a continuous flow reactor. Phenol and phenol derivatives or heterocyclic phenol are taken as starting materials, and target compounds are prepared by four-step reactions of chlorination, esterification, rearrangement and hydrolysis, wherein the rearrangement reaction is conducted in the continuousflow reactor. According to the method, the reaction is guaranteed by a miniaturized heating device for high-temperature reaction and heat generated by the reaction, the conversion rate and the yieldhigher than those in the conventional reactor are obtained in the short residence time of tens of seconds, relevant side reactions are reduced, meanwhile, fluctuation of temperature and concentrationis avoided in the reaction process, temperature run-away and overheat are avoided, and the reaction process is safe and controllable.
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Paragraph 0045-0047; 0051-0053; 0057-0059; 0063-0095
(2019/01/14)
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- 2-Alkoxy(and 2-alkoxyalkyl)-2-heterocyclic-thioacetamides for inhibiting gastric acid secretion
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The compounds are 2-alkoxy(and 2-alkoxyalkyl)-2-heterocyclic-thioacetamides which are inhibitors of gastric acid secretion.
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- 2-Alkoxy(and 2-amino)-3-amino-2-heterocyclic-thiopropanamides
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The compounds are 2-alkoxy(and 2-amino)-3-amino-2-heterocyclic-thiopropanamides, for example 2-methoxy-N-methyl-3-morpholino-2-(2-pyridyl)thiopropanamide, which are inhibitors of gastric acid secretion.
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