34840-27-2Relevant articles and documents
Synthesis of Novel Structurally Diverse N-Mono- and N,N′-Disubstituted Benzimidazol-2-one Derivatives by the Alkylations of 1,3-Dihydro-2H-benzimidazol-2-one with Some Alkyl Halides under Transfer Catalysis Conditions
Rohand, Taoufik,Sopbué Fondjo, Emmanuel
, p. 2309 - 2314 (2018/09/10)
A series of N-mono- and N,N′-disubstituted benzimidazol-2-one derivatives optionally substituted on both secondary amine functionalities were prepared with excellent yields by reacting 1,3-dihydro-2H-benzimidazol-2-one in one and two steps respectively with various alkyl halides under phase transfer catalytic conditions. One of the synthesized N,N-disubstituted benzimidazol-2-one derivatives underwent a regiospecific 1,3-dipolar cycloaddition reaction at its side allyl substituent with the in situ generated 4-chloro benzonitrile N-oxide from 4-chlorobenzaldoxime to afford in good yield the corresponding N,N′-disubstituted derivative incorporating the 2,5-dihydro-isoxazole nucleus in one of the side chain. All the new compounds were fully characterized by their physical and spectroscopic data.
Cardioselective Anti-Ischemic ATP-Sensitive Potassium Channel Openers. 3. Structure-Activity Studies on Benzopyranyl Cyanoguanidines: Modification of the Cyanoguanidine Portion
Atwal, Karnail S.,Grover, Gary J.,Ahmed, Syed Z.,Sleph, Paul G.,Dzwonczyk, Steven,et al.
, p. 3236 - 3245 (2007/10/03)
Structure-activity relationships for the cyanoguanidine portion of the lead cardiac selective ATP-sensitive potassium channel (KATP) opener (3) are described.The cyanoguanidine moiety appears to be optimal since increasing or decreasing the dis