(4-phenyl-1-piperazinyl)alkyl moieties at the 2-position were synthesized and tested for calciumantagonistic and calmodulin antagonistic activities. Antihypertensive effects in spontaneously hypertensive rats were also evaluated. In general, these compounds were rather weak calciumchannel blockers, although, in contrast, many of them had moderate to potent calmodulin antagonistic activity, and 2-[3-
Benzothiazole Synthesis: Mechanistic Investigation of an In Situ-Generated Photosensitizing Disulfide
作者:Ho Seong Hwang、Sumin Lee、Sung Su Han、Yu Kyung Moon、Youngmin You、Eun Jin Cho
DOI:10.1021/acs.joc.0c01598
日期:2020.9.18
photosensitizing disulfide in benzothiazolesynthesis from 2-aminothiophenol and aldehydes was proposed and confirmed through in-depth mechanistic studies. A series of photophysical and electrochemical investigations revealed that an in situ-generated disulfide photosensitizes molecular oxygen to generate the key oxidants, singlet oxygen and superoxide anion, for the dehydrogenation step.
5-benzothiazepine skeleton were synthesized and their vasodilating, antihypertensive, and plateletaggregation-inhibitoryactivities were investigated. (-)-cis-3-Acetoxy-5-[2-(di-methylamino) ethyl]-2,3-dihydro-8-methyl-2-(4-methylphenyl)-1,5-benzothiazepin- 4(5H)-one ((-)-13e) was selected for further studies as a potent inhibitor of platelet aggregation.
The syntheses of fluorinated phenothiazines and fluorinated 1,4-benzothiazines are reported.Fluorinated phenothiazines have been prepared via a Smilesrearrangement of N-formylateddiphenylsulphides, synthesized in turn by condensation of substituted 2-aminobenzenethiolswith 2-chloro-5-trifluoromethylnitrobenzene followed by formylation with formic acid.Fluorinated 4H-1,4-benzothiazines have been prepared
报道了氟化吩噻嗪和氟化1,4-苯并噻嗪的合成。氟化吩噻嗪是通过N-甲酰化二苯基硫化物的Smiles重排制备的,该取代反应是将取代的2-氨基苯硫醇与2-氯-5-三氟甲基硝基苯缩合,然后与甲酰化反应合成的。氟化的4 H -1,4-苯并噻嗪是通过将取代的2-氨基苯硫醇与对氟苯甲酰基丙酮在DMSO中进行缩合和氧化环化反应制得的。该反应被认为是通过烯氨基酮系统进行的。包括IR和NMR光谱研究。