1531-77-7Relevant articles and documents
Inhibitors of farnesyl protein transferase. Synthesis and biological activity of amide and cyanoguanidine derivatives containing a 5,11'dihydro[1]benzthiepin, benzoxepin, and benzazepin [4,3-b]pyridine ring system
Wolin, Ronald,Connolly, Michael,Kelly, Joseph,Weinstein, Jay,Rosenblum, Stuart,Afonso, Adriano,James, Linda,Kirschmeier, Paul,Bishop, W. Robert
, p. 2521 - 2526 (1998)
Bioisosteric replacement of the C-6 carbon atom in piperidine I and piperazine II with S, O, and N heteroatoms is described. Amide and cyanoguanidine derivatives of these compounds were evaluated in vitro and found to be good inhibitors of farnesyl-protein transferase. An improved method of preparing the 5,11-dihydro[1]-benzthiepin nucleus 6 was accomplished in high yield and with excellent regioselectivity using an A1Cl3 melt protocol.
Dihydrodibenzothiepine: Promising hydrophobic pharmacophore in the influenza cap-dependent endonuclease inhibitor
Akiyama, Toshiyuki,Hasegawa, Yasushi,Kawai, Makoto,Miyagawa, Masayoshi,Noshi, Takeshi,Shishido, Takao,Taoda, Yoshiyuki,Tomita, Kenji,Yoshida, Ryu
, (2020/09/22)
This work describes a set of discovery research studies of an influenza cap-dependent endonuclease (CEN) inhibitor with a carbamoyl pyridone bicycle (CAB) scaffold. Using influenza CEN inhibitory activity, antiviral activity and pharmacokinetic (PK) parameters as indices, structure activity relationships (SAR) studies were performed at the N-1 and N-3 positions on the CAB scaffold, which is a unique template to bind two metals. The hydrophobic substituent at the N-1 position is extremely important for CEN inhibitory activity and antiviral activity, and dihydrodibenzothiepine is the most promising pharmacophore. The compound (S)-13i showed potent virus titer reduction over oseltamivir phosphate in an in vivo mouse model. The CAB compound described herein served as the lead compound of baloxavir marboxil with a tricyclic scaffold, which was approved in Japan and the USA in 2018.
Friedel–Crafts reactions of acyl trifluoromethanesulfonates and cyclic acylsulfonium cations generated from acyl fluorides
Raghavendra Rao,Vallée, Yannick
, p. 4442 - 4447 (2016/07/06)
Reactive acyl trifluoromethanesulfonates are formed from the reaction of acyl fluorides with trimethylsilyl trifluoromethanesulfonate (TMSOTf). These electrophiles undergo Friedel–Crafts reactions with electron-rich aromatics at room temperature. When a sulfur atom is present at their γ position, their cyclization to acylsulfonium cations is observed and is followed by a rearrangement leading to benzothiepinones (or dibenzo[b,e]thiepinones) in 40–85% yield.
A Parham cyclization approach to diaryl-fused seven-membered ring heterocyclic ketones
Farrokh, John,Campos, Catherine,Hunt, David A.
, p. 5245 - 5247 (2015/08/19)
Aryl-fused seven membered heterocyclic frameworks appear in a variety of pharmaceutically pertinent compounds. However, only a very few methods for their preparation have been described. This work describes a novel synthesis route to diaryl-fused seven membered heterocyclic ketones through the generation of functionalized aryllithiums by bromine-lithium exchange, followed by intramolecular cyclization onto an electrophilic nitrile functional group. The resulting N-lithioimine can then be hydrolyzed to the desired ketone, generally in good yields. The order of addition of n-butyllithium is crucial to the process with inverse addition proving to mitigate side product formation and increase yields.
Investigation of the solvent enclathration potentials of 5-phenyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ol and related seven-membered ring alcohols
Taljaard, Benjamin,Barton, Benita,McCleland, Cedric W.
, p. 44 - 48 (2007/10/03)
Four previously reported tricyclic alcohols containing seven-membered central B-rings, 5-phenyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ol, 5-phenyl-5H-dibenzo[a,d]cyclohepten-5-ol, 11-phenyl-6,11-dihydrodibenzo[b,e] oxepin-11-ol and 11-phenyl-6,11-dihydrodibenzo[b,e]thiepin-11-ol have been synthesized and their solvent enclathration (inclusion) properties investigated and compared by using 1H-NMR and differential scanning calorimetry (DSC). The presence of an oxygen or a sulphur atom, respectively, in the B-ring of the latter two compounds had a detrimental effect on the solvent enclathration properties of the host compounds as compared to those containing an ethane or ethylene bridge. This suggests that, although enclathration is highly dependent on the hydrogen bonding ability of the host, rigidity of the structure plays a crucial role in the formation and stability of these complexes.
Piperidine derivative and pharmaceutical composition containing it
-
, (2008/06/13)
Piperidine derivatives of formula (I) and their pharmaceutically acceptable salts have antihypertensive action. The compounds may be included in pharmaceutical compositions for oral or parenteral administration.
Synthesis and biological activity of 11-[4-(cinnamyl)-1-piperazinyl]-6,11-dihydrodibenz[b,e]oxepin derivatives, potential agents for the treatment of cerebrovascular disorders
Kurokawa,Sato,Masuda,Yoshida,Ochi,Zushi,Fujiwara,Naruto,Uno,Matsumoto
, p. 2564 - 2573 (2007/10/02)
A series of 11-[4-(cinnamyl)-1-piperazinyl]-6,11-dihydrodibenz[b,e]oxepins and related compounds were synthesized and evaluated for their protective activities against complete ischemia, normobaric hypoxia, lipidperoxidation and convulsion. Structure-activity relationship studies of this series led to the finding of (E)-1-(3-fluoro-6,11-dihydrodibenz[b,e]oxepin-11-yl)-4-(3-phenyl-2-prop enyl)piperazine dimaleate (50), AJ-3941 with the most appropriate property for combined pharmacological activities. Compound 50 also shows an inhibitory effect against cerebral edema as well when orally given to rats.
SYNTHESIS OF DOTHIEPIN AND DOXEPIN BY GRIGNARD REACTIONS IN TOLUENE
Jalander, Lars,Oksanen, Lasse,Taehtinen, Johanna
, p. 3349 - 3352 (2007/10/02)
The tricyclic antidepressant agents 11-(3-N,N-dimethylaminopropylidene)-6H,11H-dibenzo--thiepin hydrochloride (Dothiepin) and 11-(3-N,N-dimethylaminopropylidene)-6H,11H-dibenzo-oxepin hydrochloride (Doxepin) have been prepared in good yield by Grignard reactions in toluene.
Acid-Catalyzed Reactions of Ortho-Substituted Benzohydroxamic Acids in Polyphosphoric Acid (PPA)
Chhaya, P. N.,Nimbalkar, M. M.,Hosangadi, B. D.
, p. 4458 - 4460 (2007/10/02)
Ortho-substituted benzohydroxamic acids undergo a variety of reactions when treated with PPA.The nature of substituents on the ring and on the functional group CONHOH plays a key role in influencing the reaction pathways.The difference in behavior may arise due to change in site of protonation depending upon the substitution.However, no clear-cut relationship could be established as attempts to monitor reactions on NMR proved inconclusive.
