Synthesis and antisecretory and antiulcer activities of derivatives and analogs of 2-(2-pyridyl)tetrahydrothiophene-2-carbothioamide
摘要:
New thioamide derivatives of 2-(2-pyridyl)tetrahydrothiophene-2-carbothioamide (29) and related compounds (in which the tetrahydrothiophene ring was replaced by tetrahydrothiopyran, tetrahydrofuran, 1,3-dithiane, or 1,3-oxathiane and where the pyridine ring was replaced by other nitrogen heterocycles) were synthesized and tested for their antisecretory and antiulcer activities. These thioamides were prepared according to one of the following methods: reaction of an isothiocyanate with the carbanion of the corresponding cyclic precursor (for secondary thioamides); reaction of ammonia or an amine with the dithio ester prepared from the same precursor (for primary, secondary, and tertiary thioamides). These thioamides were evaluated by the Shay method to measure their antisecretory activity and by the stress-induced-ulcer method to test their antiulcer activity. Structure-activity relationships are discussed. N-Methyl-2-(2-pyridyl)tetrahydrothiophene-2-carbothioamide (R.P. 40749, 30) exhibited activities that were at least 10 times higher than those reported for cimetidine.
Synthesis and antisecretory and antiulcer activities of derivatives and analogs of 2-(2-pyridyl)tetrahydrothiophene-2-carbothioamide
摘要:
New thioamide derivatives of 2-(2-pyridyl)tetrahydrothiophene-2-carbothioamide (29) and related compounds (in which the tetrahydrothiophene ring was replaced by tetrahydrothiopyran, tetrahydrofuran, 1,3-dithiane, or 1,3-oxathiane and where the pyridine ring was replaced by other nitrogen heterocycles) were synthesized and tested for their antisecretory and antiulcer activities. These thioamides were prepared according to one of the following methods: reaction of an isothiocyanate with the carbanion of the corresponding cyclic precursor (for secondary thioamides); reaction of ammonia or an amine with the dithio ester prepared from the same precursor (for primary, secondary, and tertiary thioamides). These thioamides were evaluated by the Shay method to measure their antisecretory activity and by the stress-induced-ulcer method to test their antiulcer activity. Structure-activity relationships are discussed. N-Methyl-2-(2-pyridyl)tetrahydrothiophene-2-carbothioamide (R.P. 40749, 30) exhibited activities that were at least 10 times higher than those reported for cimetidine.
reactions, does not require strong electrophilicactivators, engages a broad range of C(sp3)‐, C(sp2)‐, and C(sp)‐nucleophiles, and seamlessly integrates with C−H and C−X magnesiation. Given the central character of sulfur compounds in organic chemistry, this protocol allows access to unrelated carbonyls, olefins, organometallics, halides, and boronic esters through a single strategy.
Thiocarboxamide derivatives and their use as pharmaceuticals
申请人:Rhone-Poulenc Sante
公开号:US04379154A1
公开(公告)日:1983-04-05
Thioformamide derivatives of the formula: ##STR1## wherein R represents hydrogen or alkyl of 1 through 4 carbon atoms, and (i) Het represents a heterocyclic radical selected from pyrid-3-yl, pyrid-4-yl, pyridazinyl, pyrazinyl, pyrimidinyl, quinolyl, imidazolyl, naphthyridinyl, quinoxalinyl and quinazolinyl, X represents sulphur or oxygen and Y represents sulphur or oxygen, a valency bond or methylene, or (ii) Het represents pyrid-2-yl, X represents sulphur or oxygen and Y represents sulphur or oxygen or methylene, or (iii) Het represents pyrid-2-yl, X represents oxygen and Y represents a valency bond, are new compounds possessing useful pharmacological properties. They are particularly useful in the treatment of gastrointestinal ulcers and in the treatment of hypertension, depending on the definition of the symbol Het.
Kabzinska, Krystyna; Kawecki, Robert, Bulletin of the Polish Academy of Sciences: Chemistry, 1989, vol. 37, # 3-4, p. 117 - 121
作者:Kabzinska, Krystyna、Kawecki, Robert
DOI:——
日期:——
A new approach to the selective alkylation of difunctional compounds
作者:Igor V. Komarov、Viktor E. Denisenko、Mikhail Yu. Kornilov
DOI:10.1016/s0040-4020(01)87233-1
日期:1993.8
Alkylation of some diamines containing both tertiary and primary amino groups is described; it proceeds exclusively with less nucleophilic tertiary amino group when an appropriate lanthanide chelate is added to the reaction mixture. Under similar conditions the alkylation of 3-(tetrahydro-2-thienyl)-pyridine affects both of its nucleophilic centers. Plausible explanations of this fact is discussed. The effect of the presence of different lanthanide complexes upon difunctional compound alkylation has been investigated.