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    • 1. 发明授权
    • 4-(2-Pyridylamidoethyl)piperidines
    • 4-(2-吡啶基酰氨基乙基)哌啶
    • US3992388A
    • 1976-11-16
    • US623351
    • 1975-10-17
    • Wayne E. BarthDonald E. Kuhla
    • Wayne E. BarthDonald E. Kuhla
    • A61K31/445C07D213/82C07D401/12C07D213/56
    • C07D213/82A61K31/445C07D401/12Y10S514/866
    • Disclosed herein is an improved process for the preparation of known hypoglycemic piperidinesulfamylureas of the structue ##SPC1##Wherein R is selected from the group consisting of 3-(2-methoxy)pyridyl, 3-(2-ethoxy)pyridyl and 2-(4-chloro)pyridyl and R' is selected from the group consisting of bicyclo[2.2.1]hept-5-en-2-yl-endo-methyl, bicyclo[2.2.1]hept-2-yl-endo-methyl, 7-oxabicyclo[2.2.1]hept-2-yl-methyl, 1-adamantyl and cycloalkyl having from five to eight carbon atoms.Said process comprises contacting 4-(2-pyridyl-amidoethyl) piperidine of the structue ##SPC2##With substantially one equivalent of sulfamide thereby exclusively sulfonating the piperidine nitrogen atom. Said 4-(2-pyridylamidoethyl)piperidines from the corresponding 4-(2-pyridylamidoethyl) pyridines by selectively activating the more basic nitrogen atom of said pyridine compound either by N-alkylation or by contact with acid and then exclusively reducing the activated pyridine ring with either hydrogen alone or in combination with a metal hydride. Said 4-(2-pyridylamidoethyl)pyridines are produced by contacting 4-(2-aminoethyl)pyridine with a pyridyl acid chloride of the formula R(C=O)Cl. The piperidine sulfonamides produced by the process of the instant invention are converted to the desired hypoglycemic agent by methods well-known to those skilled in the art.The 4-(2-pyridylamidoethyl)pyridines and piperidines of the instant invention are themselves novel compounds useful as intermediates in the synthesis of piperidine sulfamylurea hypoglycemic agents.
    • 本文公开了一种用于制备结构+ q,10的已知低血糖哌啶磺酰甲基脲的改进方法,其中R选自3-(2-甲氧基)吡啶基,3-(2-乙氧基)吡啶基和2-( 4-氯)吡啶基和R'选自双环[2.2.1]庚-5-烯-2-基 - 内 - 甲基,双环[2.2.1]庚-2-基 - 内 - 甲基 ,7-氧杂二环[2.2.1]庚-2-基 - 甲基,1-金刚烷基和具有5-8个碳原子的环烷基。
    • 2. 发明授权
    • Process for the synthesis of 4-(2-pyridylamido ethyl) piperidines
    • 合成4-(2-吡啶基酰氨基乙基)哌啶的方法
    • US3933830A
    • 1976-01-20
    • US504826
    • 1974-09-10
    • Wayne E. BarthDonald E. Kuhla
    • Wayne E. BarthDonald E. Kuhla
    • A61K31/445C07D213/82C07D401/12C07D211/02
    • C07D213/82A61K31/445C07D401/12Y10S514/866
    • Disclosed herein is an improved process for the preparation of known hypoglycemic piperidinesulfamylureas of the structure ##EQU1## wherein R is selected from the group consisting of 3-(2-methoxy)pyridyl, 3-(2-ethoxy)pyridyl and 2-(4-chloro)pyridyl and R' is selected from the group consisting of bicyclo[2.2.1]hept-5-en-2-yl-endo-methyl, bicyclo[2.2.1]hept-2-yl-endo-methyl, 7-oxabicyclo[2.2.1]hept-2-yl-methyl, 1-adamantyl and cycloalkyl having from five to eight carbon atoms.Said process comprises contacting 4-(2-pyridyl-amidoethyl) piperidine of the structure ##EQU2## with substantially one equivalent of sulfamide thereby exclusively sulfonating the piperidine nitrogen atom. Said 4-(2-pyridylamidoethyl)piperidines from the corresponding 4-(2-pyridylamidoethyl) pyridines by selectively activating the more basic nitrogen atom of said pyridine compound either by N-alkylation or by contact with acid and then exclusively reducing the activated pyridine ring with either hydrogen alone or in combination with a metal hydride. Said 4-(2-pyridylamidoethyl)pyridines are produced by contacting 4-(2-aminoethyl)pyridine with a pyridyl acid chloride of the formula R(C=O)Cl. The piperidine sulfonamides produced by the process of the instant invention are converted to the desired hypoglycemic agent by methods well-known to those skilled in the art.The 4-(2-pyridylamidoethyl)pyridines and piperidines of the instant invention are themselves novel compounds useful as intermediates in the synthesis of piperidine sulfamylurea hypoglycemic agents.
    • 本文公开了一种改进的制备以下结构的已知降血糖哌啶磺酰胺的制备方法:OO PARALLEL PARALLEL R-CNH(CH 2)2 -SO 2 NHC-NHR',其中R选自3-(2-甲氧基)吡啶基,3 - (2-乙氧基)吡啶基和2-(4-氯)吡啶基,R'选自双环[2.2.1]庚-5-烯-2-基 - 内 - 甲基,双环[2.2。 1]庚-2-基 - 内 - 甲基,7-氧杂双环[2.2.1]庚-2-基 - 甲基,1-金刚烷基和具有5-8个碳原子的环烷基。
    • 7. 发明授权
    • 3-Hydroxy and 3-acetoxy-6-triphenyl-methylaminopenams
    • 3-羟基和3-乙酰氧基-6-三苯基 - 甲基氨基戊二酸
    • US4036846A
    • 1977-07-19
    • US736811
    • 1976-10-29
    • Wayne E. Barth
    • Wayne E. Barth
    • A23K1/16C07D277/10C07D499/00C07F9/6561
    • C07F9/65611A23K20/116A23K20/137C07D277/10C07D499/00
    • The present invention discloses novel 6-acylamino-2,2-dimethyl-3-phosphonopenams and certain lower alkyl esters thereof possessing antibacterial activity, methods for their production, and intermediates therefor; the production comprises the steps of reacting 6-triphenylmethylamino-2,2-dimethylpenam-3-carboxylic acid with lead tetraacetate to form the corresponding 3-acetoxy compound, the latter is converted to .alpha.-triphenylmethylamino-5,5-dimethyl-3-thiazoline-2-acetic acid which is condensed with dimethyl phosphite to produce .alpha.-triphenylmethylamino-5,5-dimethyl-4(0,0-dimethylphosphono)-thiazolidine-2-acetic acid which is cyclized to 6-triphenylmethylamino-2,2-dimethyl-3-(0,0-dimethylphosphono)penam and the latter is subsequently deblocked and acylated.
    • 本发明公开了具有抗菌活性的新颖的6-酰基氨基-2,2-二甲基-3-膦草丁酸及其某些低级烷基酯,其生产方法及其中间体; 该制备包括使6-三苯基甲基氨基-2,2-二甲基联苯-3-羧酸与四乙酸铅反应形成相应的3-乙酰氧基化合物的步骤,将其转化成α-三苯甲基氨基-5,5-二甲基-3- 与亚磷酸二甲酯缩合以产生α-三苯基甲基氨基-5,5-二甲基-4(0,0-二甲基膦酰基) - 噻唑烷-2-炔酸的4-噻唑啉-2-乙酸,将其环化为6-三苯基甲基氨基-2, 2-二甲基-3-(0,0-二甲基膦酰基)半缩醛,后者随后被去封闭并酰化。