6116-76-3Relevant academic research and scientific papers
Catalytic Acceptorless Dehydrogenation of Amino Alcohols and 2-Hydroxybenzyl Alcohols for Annulation Reaction under Neutral Conditions
Pandey, Akanksha M.,Digrawal, Naveen Kumar,Mohanta, Nirmala,Jamdade, Akash Bandu,Chaudhari, Moreshwar B.,Bisht, Girish Singh,Gnanaprakasam, Boopathy
, p. 8805 - 8828 (2021/07/20)
A base-free and acceptorless Ru-catalyzed dehydrogenative approach has been developed for the synthesis ofN-heterocycles by using 1,3-dicarbonyls and amino alcohols through a domino sequential enamine formation and intramolecular oxidative cyclization strategy. This unified approach is also applicable for the synthesis of O-heterocycles involving 2-hydroxybenzyl alcohol as a coupling reactant via consecutive C-alkylation and intramolecular cyclization steps. The present protocol is general for the synthesis of varieties of biologically important scaffolds, such as tetrahydro-4H-indol-4-one, 3,4-dihydroacridin-1(2H)-one, and tetrahydro-1H-xanthen-1-ones derivatives using a single catalytic system, viz. RuH2CO(PPh3)3. Environmentally benign H2O and H2are the only byproducts in this domino process. Moreover, RuH2CO(PPh3)3-catalyzed C3-alkylation of tetrahydro-4H-indol-4-one using alcohol as a alkylating partner is also described in this report. For the first time, a solvent-free gram-scale reaction for the acceptorless dehydrogenative annulation has been demonstrated. A plausible mechanism for the Ru-catalyzed base-free and acceptorless dehydrogenative annulation of amino alcohols or 2-hydroxybenzyl alcohols has been provided with several experimental investigations and spectroscopic evidence.
PROCESS FOR PREPARATION OF MOLINDONE
-
, (2020/08/30)
The present invention provides process for preparation of molindone (I) comprising: a) reacting compound with cyclohexane-1,3-dione to form 2-(2-oxopentan-3-yl)cyclohexane-1,3-dione wherein X is Cl, Br or I, b) cyclizing 2-(2-oxopentan-3-yl)cyclohexane-1,
METHODS OF PRODUCING MOLINDONE AND ITS SALTS
-
Paragraph 0117, (2014/04/03)
The present invention is directed towards novel methods of synthesis of molindone, synthesis of the intermediates of molindone, and high-purity compositions of molindone. In particular, the invention relates to the methods of synthesis of molindone through the Mannich reaction.
Discovery and synthesis of tetrahydroindolone derived semicarbazones as selective Kv1.5 blockers
Wu, Shengde,Fluxe, Andrew,Janusz, John M.,Sheffer, James B.,Browning, Greg,Blass, Benjamin,Cobum, Keith,Hedges, Richard,Murawsky, Michael,Fang, Bin,Fadayel, Gina M.,Hare, Michelle,Djandjighian, Laurent
, p. 5859 - 5863 (2007/10/03)
A novel class of tetrahydroindolone-derived semicarbazones has been discovered as potent Kv1.5 blockers. In in vitro studies, several compounds exhibited very good potency for blockade of Kv1.5. Compound 8i showed good selectivity for blockade of Kv1.5 vs hERG and L-type calcium channels. In an anesthetized pig model, compounds 8i and 10c increased atrial ERP about 28%, 18%, respectively, in the right atrium without affecting ventricular ERP.
Conformationally restricted butyrophenones with mixed dopaminergic (D2) and serotoninergic (5-HT(2A)) affinities. Synthesis of 5-aminoethyl-and 6- aminomethyl-4-oxotetrahydroindoles as potential atypical antipsychotics
Masaguer, Christian F.,Casariego, Isabel,Ravina, Enrique
, p. 621 - 632 (2007/10/03)
We describe the synthesis of 5-aminoethyl- and 6-aminomethyl-4- oxotetrahydroindoles as butyrophenone derivatives in the indole series, as potential atypical antipsychotics. The affinities of these compounds for serotonin (5-HT(2A)) and dopamine (D2) receptors were evaluated in vitro. The ratios of pK(i)'s for 5-HT(2A)/D2 receptors may be useful for rapid screening of new compounds and assessing potential induction of extrapyramidal symptoms; ratio values ≥1.12 (Meltzer's ratio) are predictive of an atypical antipsychotic profile. Compounds 26e (QF 0408B) and 26f (QF 0409B) showed high affinity for both D2 and 5-HT(2A) receptors, and their Meltzer's ratios were 1.32 and 1.17 respectively, while haloperidol showed a ratio of 0.93.
