摘要:
Thiols are trapped, and converted to disulfide compounds, by a process of reacting them with compounds containing a 1,2,4-thiadiazole ring structure carrying a substituent at position 3 of the thiadiazole ring, and being unsubstituted at position N-2. The process is useful pharmacologically, in inhibiting certain thiol-containing enzymes such as H.sup.+ /K.sup.+ -ATPase (the proton pump), and industrially, in selective removal of thiol compounds from gas or liquid mixtures.
摘要翻译:通过使它们与在噻二唑环的3位具有取代基的1,2,4-噻二唑环结构化合物反应,并且在N-2位未取代的方法将硫醇捕获并转化成二硫化物。 该方法在抑制某些含硫醇的酶如H + / K + -ATP酶(质子泵)和工业上在气体或液体混合物中选择性除去硫醇化合物方面是有用的。
摘要:
The present invention relates to a novel process for the preparation of 3-hydroxy-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I: The method comprises of the TEMPO oxidation of a primary alcohol of 3-O-protected-2-hydroxymethyl-6-alkyl-4H-pyran-4-one of formula III to 3-O-protected-6-alkyl-4-oxo-4H-pyran-2-carboxylic acid of formula II. Reaction of compound of formula II with methylamine and 1,1-carbonyldiimidazole in an inert solvent affords 3-O-protected-N, 1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide, which is deprotected to give of 3-hydroxy-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I.
摘要:
Compounds of the formula ##STR1## wherein n is 1-3; R.sup.1, R.sup.2 and R.sup.3 are the same or different and are hydrogen, lower alkyl, lower alkenyl, lower alkynyl, aryl or aryl lower alkyl wherein when aryl is phenyl it is unsubstituted or independently substituted with one or more halo, lower alkyl or lower alkoxy groups; and R.sup.4 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, trialkylsilyl, aryl or aryl lower alkyl wherein when aryl is phenyl it is unsubstituted or independently substituted by one or more halo, lower alkyl or lower alkoxy groups; excluding those compounds wherein R.sup.1 and R.sup.2 are hydrogen and R.sup.4 is ethyl, propyl or butyl. These compounds are useful as protease inhibitors.
摘要:
The present invention relates to a novel process for the preparation of 3-hydroxy-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I: The method comprises of the TEMPO oxidation of a primary alcohol of 3-O-protected-2-hydroxymethyl-6-alkyl-4H-pyran-4-one of formula III to 3-O-protected-6-alkyl-4-oxo-4H-pyran-2-carboxylic acid of formula II. Reaction of compound of formula II with methylamine and 1,1-carbonyldiimidazole in an inert solvent affords 3-O-protected-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide, which is deprotected to give of 3-hydroxy-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I.
摘要:
Novel thiadiazole compounds are provided, which are effective as proton pumps inhibitors, useful in treating peptic ulcers by inhibition of the proton pump enzyme H.sup.+ /K.sup.+ -ATPase. The compounds are 3-substituted 1,2,4-thiadiazolo [4,5-.alpha.]benzimidazole and 3-substituted imidazo[1,2-d]-1,2,4-thiadiazoles corresponding to the general formula: ##STR1## where X and Z either represent an optionally substituted benzene ring fused to the diazole nucleus, or represent a variety of independent chemical groupings (hydrogen, lower alkyl, halo, etc.) and Y is selected from a wide range, e.g. heterocyclics and carbonyl groups.
摘要翻译:提供新的噻二唑化合物,其作为质子泵抑制剂是有效的,可用于通过抑制质子泵酶H + / K + -ATP酶来治疗消化性溃疡。 该化合物是对应于通式的3-取代的1,2,4-噻二唑并[4,5-a]苯并咪唑和3-取代咪唑并[1,2-d] -1,2,4-噻二唑,其中X和 Z表示与二唑核稠合的任选取代的苯环,或代表各种独立的化学基团(氢,低级烷基,卤素等),Y选自宽范围,例如 杂环和羰基。
摘要:
The present invention relates to a novel process for the preparation of 3-hydroxy-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I: The method comprises of the TEMPO oxidation of a primary alcohol of 3-O-protected-2-hydroxymethyl-6-alkyl-4H-pyran-4-one of formula III to 3-O-protected-4-alkyl-4-oxo-4H-pyran-2-carboxylic acid of formula II. Reaction of compound of formula II with methylamine and 1,1-carbonyidiimidazole in an inert solvent affords 3-O-protected-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide, which is deprotected to give of 3-hydroxy-N,1,6-trialkyl-4-oxo-1,4-dihydropyridine-2-carboxamide of formula I.
摘要:
The present invention relates to a process to prepare a compound of formula (I) wherein Y and Z can be identical or different and represent a halogene. The bis-triazole compounds of formula (I) and intermediates have antifungal activity.
摘要:
Novel thiadiazole compounds are provided, which are effective as proton pumps inhibitors, useful in treating peptic ulcers by inhibition of the proton pump enzyme H.sup.+ /K.sup.+ -ATPase. The compounds are 3-substituted 1,2,4-thiadiazolo �4,5-.alpha.!benzimidazole and 3-substituted imidazo�1,2-d!-1,2,4-thiadiazoles corresponding to the general formula: ##STR1## where X and Z either represent an optionally substituted benzene ring fused to the diazole nucleus, or represent a variety of independent chemical groupings (hydrogen, lower alkyl, halo, etc.) and Y is an electronegative group.
摘要翻译:提供新的噻二唑化合物,其作为质子泵抑制剂是有效的,可用于通过抑制质子泵酶H + / K + -ATP酶来治疗消化性溃疡。 化合物是3-取代的1,2,4-噻二唑并[4,5-苯并咪唑和3-取代的咪唑并[1,2-d] -1,2,4-噻二唑,其通式如下:< IMAGE> 其中X和Z表示与二唑核稠合的任选取代的苯环,或代表各种独立的化学基团(氢,低级烷基,卤素等),Y是电负性基团。