390811-95-7Relevant articles and documents
Development of safe one-pot synthesis of N-1- and C-2-substituted benzimidazole via reductive cyclization of o-nitroarylamine using Na 2S2O4
Oda, Shinichi,Shimizu, Hideki,Aoyama, Yasunori,Ueki, Tatsuo,Shimizu, Sumio,Osato, Hiroshi,Takeuchi, Yoshiyuki
, p. 96 - 101 (2012/05/31)
We report that the reductive cyclization of o-nitroarylamine with aldehyde using sodium dithionite (Na2S2O4) could be accelerated by addition of H2O, which made it possible to control the heat release of the reaction by semibatch-type operation. Safety evaluation was performed using DSC, ARSST, in situ IR analysis, and Multimax.
Viral polymerase inhibitors
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, (2008/06/13)
A compound of the formula I: wherein: X is CH or N; Y is O or S; Z is OH, NH2, NMeR3, NHR3; OR3 or 5- or 6-membered heterocycle, having 1 to 4 heteroatoms selected from 0, N and S, said heterocycle being optionally substituted with from 1 to 4 substituents; A is N, COR7 or CR5, wherein R5 is H, halogen, or (C1-6) alkyl and R7 is H or (C1-6 alkyl), with the proviso that X and A are not both N; R6 is H, halogen, (C1-6 alkyl) or OR7, wherein R7 is H or (C1-6 alkyl); R1 is selected from the group consisting of 5- or 6-membered heterocycle having 1 to 4 heteroatoms selected from O, N, and S, phenyl, phenyl(C1-3)alkyl, (C2-6)alkenyl, phenyl(C2-6)alkenyl, (C3-6)cycloalkyl, (C1-6)alkyl, CF3, 9- or 10-membered heterobicycle having 1 to 4 heteroatoms selected from O, N and S, wherein said heterocycle, phenyl, phenyl(C2-6)alkenyl and phenyl(C1-3)alkyl), alkenyl, cycloalkyl, (C1-6)alkyl, and heterobicycle are all optionally substituted with from 1 to 4 substituents R2 is selected from (C1-6)alkyl, (C3-7)cycloalkyl, (C3-7)cycloalkyl(C1-3)alkyl, (C6-10)bicycloalkyl, adamantyl, phenyl, and pyridyl, all of which is optionally substituted with from1 to 4 substituents; R3 is selected from H, (C1-6)alkyl, (C3-6)cycloalkyl, (C36)cycloalkyl(C1-6)alkyl, (C6-10)aryl, (C6-10)aryl(C1-6)alkyl, (C2-6)alkenyl, (C3-6)cycloalkyl(C2-6)alkenyl, (C6-10)aryl(C2-6)alkenyl, N{(C1-6)alkyl}2, NHCOO(C1-6)alkyl(C6-10)aryl, NHCO(C6-10)aryl, (C1-6)alkyl-5- or 10-atom heterocycle, having 1 to 4 heteroatoms selected from O, N and S, and 5- or 10-atom heterocycle having 1 to 4 heteroatoms selected from O, N and S; wherein said alkyl, cycloalkyl, aryl, alkenyl and heterocycle are all optionally substituted with from 1 to 4 substituents; n is zero or 1; or a detectable derivative or salt thereof. The compounds of the invention may be used as inhibitors of hepatitis C virus replication. The invention further provides a method for treating or preventing hepatitis C virus infection.