Infrared vibrations of carbon-sulphur bonds in bis(benzoxazole-, benzoimidazole-benzothiazole-2-thiol)methane. Assignments by "selenation"
The i.r. spectra of the title compounds have been compared with those of the corresponding-2-selenol derivatives.The i.r. vibrational assignments of the thioether links have been made on the basis of the selenation.The moiety CH2-(Y-CH2)2 (Y = S, Se) present in all the compounds considered gives typical absorptions in the fingerprint region.
Cristiani, Franco,Devillanova, Francesco A.,Diaz, Angelo,Verani, Gaetano
The invention belongs to the technical field of medicine and relates to novel benzothiazole compounds capable of inhibiting gastric acid secretion and resisting Helicobacter pylori. The compounds effectively bind with the H+K+-ATP enzyme in vivo so as to eventually inhibit gastric acid secretion, and the compounds have good gastric acid inhibiting and anti-gastric ulcer activity. The structural formula (I) of the compounds is described in the specification, and R, m and n in the formula (I) are defined in claim 1.
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Paragraph 0078; 0089; 0090
(2016/10/10)
Bromomethyllithium-mediated chemoselective homologation of disulfides to dithioacetals
An efficient, chemoselective homologation of disulfides and diselenides to the corresponding dithio- and diselenoacetals has been developed via the addition of bromomethyllithium. Chemoselectivity is fully preserved in the presence of concomitant electrophilic sites decorating the substrates. The synthetic potential of selected dithioacetals has been evaluated in Feringa-Fa?anas-Mastral-type Pd-catalyzed coupling with an organolithium and in the unusual 1,4-addition to a Weinreb amide.
Pace, Vittorio,Pelosi, Azzurra,Antermite, Daniele,Rosati, Ornelio,Curini, Massimo,Holzer, Wolfgang
supporting information
p. 2639 - 2642
(2016/02/18)
Synthesis and crystal structures of some bis-benzimidazoles, -benzothiazoles and -benzoxazoles by an alternative route: Their complexation with copper(II) salts
A novel and convenient synthetic route towards new bis-benzimidazoles, -benzothiazoles and -benzoxazoles from readily available starting materials has been established. These compounds have thioethers at the 2 position of the heterocycle and the resultant
Matthews, Craig J.,Clegg, William,Elsegood, Mark R. J.,Leese, Troy A.
p. 1531 - 1538
(2007/10/03)
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