A series of 2-anilino-1,6-dihydro-6-oxo-5-pyrimidinecarboxylic acids with various substituents was synthesized and evaluated in the rat passive cutaneous anaphylaxis test for antiallergic activity. High activity by intraperitoneal and oral administrations was observed for the 3-trifluoromethyl and 2-alkoxyanilino derivatives (64, 79, 81, 82 and 85). Structure-activity relationships are discussed.
Visible-Light-Promoted Remote C–H Functionalization of <i>o</i>-Diazoniaphenyl Alkyl Sulfones
作者:Shaofu Du、Elizabeth Ann Kimball、Justin R. Ragains
DOI:10.1021/acs.orglett.7b02650
日期:2017.10.20
Visible-light irradiation of ortho-diazoniaphenyl alkyl sulfones in the presence of Ru(bpy)32+ results in remote Csp3–H functionalization. Key mechanistic steps in these processes involve intramolecular hydrogen atom transfer from Csp3–H bonds to aryl radicals to generate alkyl/benzyl radicals. Subsequent polar crossover occurs by single-electron oxidation of the alkyl/benzyl radicals to carbenium
In search for inhibitors of gastricH+/K+-ATPase, 4-(phenylamino)quinoline-3-carboxamides were synthesized and evaluated for antisecretory activity against histamine-induced gastric acid secretion in rats. These compounds were synthesized by condensation of aniline derivatives with N-substituted 4-chloroquinoline-3-carboxamides, which were obtained from treatment of 4(1H)-quinolinone-3-carboxylic acid
为了寻找胃H + / K + -ATP酶的抑制剂,合成了4-(苯氨基)喹啉-3-羧酰胺并评估了其对组胺诱导的大鼠胃酸分泌的抗分泌活性。这些化合物是通过将苯胺衍生物与N-取代的4-氯喹啉-3-羧酰胺缩合而合成的,后者是由亚硫酰氯处理4(1H)-喹啉酮-3-羧酸而获得的。大多数化合物抑制大鼠中组胺诱导的胃酸分泌。其中,N-烯丙基-4-(2-乙基苯基氨基)喹啉-3-羧酰胺(4h)是最有效的抑制剂,并且作为候选抗溃疡药的分布最佳。该化合物显示出可逆的K +竞争性胃H + / K + -ATPase抑制活性。
Cyclization of .ALPHA.- and .BETA.-alkylthio-substituted amines possessing positively charged carbon at the nitrogen. A new synthetic method for thiazolidines, thiomorpholines and dihydro-1,4-benzothiazines.
The present paper describes the finding that α- and β-alkylthio-substituted amines possessing a positively charged carbon such as =CHPh, CO2R and CH2SR at the nitrogen undergo cyclization in the presence of lithium diisopropylamide or sodium hydride leading to thiazolidines, thiomorpholines and dihydro-1, 4-benzothiazines.
Alkylation of Benzothiazolines and the Stevens Rearrangement of the Resulting 2,3,3-Trisubstituted Benzothiazolinium Salts
作者:Kin-ya Akiba、Yoshio Ohara、Naoki Inamoto
DOI:10.1246/bcsj.55.2976
日期:1982.9
(3). The configuration of two alkyl groups on the nitrogen was assigned by NMR spectra and NOE measurement. In the Stevens rearrangement of 3 with lithium diisopropylamide ethyl group showed a much larger migratory aptitude (Et:Me≥20 :1) than methyl group irrespective of the configuration of 3, and cyclic ammonium ylide with planar π-type carbanion was proposed as an intermediate. 3 suffered nucleophilic