1210-92-0Relevant articles and documents
AZOLE-FUSED PYRIDAZIN-3(2H)-ONE DERIVATIVES
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Paragraph 0325; 0326, (2021/04/01)
Disclosed are compounds of Formula (1) and pharmaceutically acceptable salts thereof, wherein α, β, n, R4, R5, R6, R8, R9, R10, R11, X1, X2, X3 and X7 are defined in the specification. This disclosure also relates to materials and methods for preparing compounds of Formula (1), to pharmaceutical compositions comprising them, and to their use for treating diseases, disorders, and conditions associated with GPR139.
A tropylium annulated N-heterocyclic carbene
Appel, Sebastian,Brüggemann, Peter,Ganter, Christian
, p. 9020 - 9023 (2020/08/17)
Derivatives of the cationic tropylium annulated imidazolylidene ITrop+ are obtained by hydride abstraction from related cycloheptatriene compounds. Spectroscopic, structural and theoretical data indicate that, as a cationic relative of benzimidazolylidenes, ITrop+ has highly reduced σ-donor and strong π-acceptor character.
A direct cycloaminative approach to imidazole derivatives via dual C-H functionalization
Arepally, Sagar,Babu, Venkata Nagarjuna,Bakthadoss, Manickam,Sharada, Duddu S.
supporting information, p. 5014 - 5017 (2017/11/06)
Organoiodine(III)-promoted C(sp3)-H azidation was a key step for the cycloaminative process. An unprecedented method for metal-free dehydrogenative N-incorporation into C(sp3)-H and C(sp2)-H bonds for the synthesis of diverse imidazoles has been disclosed. The overall transformation involves the construction of four C-N bonds through hydroamination-azidation-cyclization sequence. The reaction can be easily handled and proceeds under mild conditions. Further, the potential of the present strategy is revealed by the practical synthesis of N-heterocyclic carbene (NHC) precursors.
Design, synthesis and evaluation of imidazolylmethyl carbamate prodrugs of alkylating agents
Hay, Michael P.,Wilson, William R.,Denny, William A.
, p. 645 - 657 (2007/10/03)
Two approaches to prodrugs of alkylating agents based on an imidazolylmethyl carbamate nucleus were explored. A 2-azido analogue (3) of the bis-carbamate carmethizole (1) displayed similar aerobic cytotoxicity to 1 in a panel of human and murine cell lines. Approaches to the 2-amino and 2- carbamoyl analogues are described. In the second approach an imidazolylmethanol was used as a 'trigger' linked via a carbamate to the alkylating agent N,N-bis(2-chlorethyl)amine (BCEA). Nitroimidazole and methylsulphinylimidazole carbamate prodrugs 6-8 were 5-20-fold less toxic than BCEA. Despite this deactivation in the prodrug form, little increase in cytotoxicity was observed under hypoxia. The data suggest that BCEA released on bioreduction is not sufficiently potent to contribute significant additional cytotoxicity. (C) 2000 Elsevier Science Ltd.
A new synthesis of carmethizole and related nitrogen analogues
Hay, Michael P.,Denny, William A.
, p. 8425 - 8428 (2007/10/03)
A new efficient six-step synthesis of carmethizole, a novel big- carbamate alkylating agent, and syntheses of related nitrogen analogues are described, using a key 4,5-disubstituted imidazole intermediate 8.
Intramolecular Hydrogen Bonding in Imidazole-4(5)-alkoxycarbonyl-5(4)-carboxamide Derivatives
Yasuda, Naohiko,Nakamura, Asao,Tsuboi, Masamichi
, p. 303 - 307 (2007/10/02)
The ir spectrum of imidazole derivatives, which have an alkoxycarbonyl group and a carboxamide group at the 4- and 5-positions of the imidazole ring respectively, exhibits the shift of the ester carbonyl band to a lower wave number.This phenomenon was investigated by spectroscopic measurements of a group of relevant compounds.The results indicate that the shift is caused by the intramolecular hydrogen bonds between the hydrogen atom of the amide and the carbonyl oxygen of the ester which is enhanced by the resonance stabilization of the imidazole ring.